Control Room / Recording Room / Rehearsal Room - New Design

Hi; having spent the last three months reading and researching, I think I'm about ready to do over my all in one control / recording room / rehearsal room THE ROOM The room is small; it's 3260x3210x2930. There is a door on the back wall near the left corner and a window on the right wall towards the front. There is a chimney breast on the front wall 1495mm wide which protrudes 260mm into the room creating matching nooks - give or take 10mm - on either side. There is skirting and coving - both around 100mm - along the floor and the ceiling. I believe that the ceiling is standard plaster board, as are the back and left wall. The front and right walls are external brick walls covered in plaster. The floor is laminate and there is a 1600x750x60 heater mounted 30mm off the wall on the left side. The room is at the back of the house so traffic noise isn't a huge issue. I'm not overly concerned with sound proofing as I'm on the ground floor and though it's semi-detached, we're away from the neighbours. My main concern is acoustic treatment as I want to begin expanding my client bass so quality is important. Things need to be easily moveable so I'm not building anything into the walls, other than hooks to hold things in place. The room will be used for recording using a mix of synths and direct input instrumentation - acoustic guitar, electric bass, vocals. In addition, we have a set of electric drums that I need to get in room. I will also be using the room for band rehearsal and for vocal / instrument lessons. DIY I'm going to build a number of different elements. My traps and superchunks will be made of RS60 Rocksil covered with burlap or perhaps a slightly more attractive material. I'll use timber for support and MDF fo flat surfaces. * Superchunk 1 - 850x600x600 Triangles of RS60, 100mm Thick, stacked 14 high, supported with 25x25 Timber frames and wrapped in material. These will be individually 1425mm high so I'll stack them 2 high. As with other superchunks, the front face will have a layer of plastic to act as a crude low pass filter. * Superchunk 2 - As above, but half as small 600x420x420 Triangles. * Superchunk 3 - Made of three pieces. The corner piece will be a square, 300x300x100 of RS60, again 14 high and supported by a frame. This will e flanked either side by separate triangle pieces of the same area (with angles of 30, 60 and 90 degrees). * Absorption Panel - A single sheet of RS60 supported by a timber backing frame and covered with material * Speaker Stands - A 300x300 MDF base, 5 supporting timber planks (800-900mm high), another layer of MDF, a 300x300 square of RS60 covered with material, supported by 4 rubber feet. * Absorption Stools - A 300x300 MDF Base, 4 supporting timber planks (400mm high), 4 300x250x100 panels of RS60 another layer of MDF, a 100mm layer of furniture foam covered with material, supported by 4 rubber feet. * Stool Stands - A 300x300 MDF base, 5 supporting timber planks (800-900mm high), another layer of MDF with 4 holes sawn out to match feet arrangement of stools, supported by 4 rubber feet. * QRD Dffusor - As per this design. Additional room items (some shown) - Electric Drum kit, Keyboard / Synthesiser. amps and guitars. LAYOUTS I'm torn between two layouts; I came to the decision to work along the diagonal based upon space considerations. Having laid out the room both ways using Sketchup - it took a while to get used to but I think you get the picture - I'm unable to decide which is better, or if any of them are even good. In terms of treatment, I understand that I need to treat as many corners as possible, to treat first reflection points and to get as much absorption as possible. Option 1. Front Wall Corners - Superchunk 2 Front Wall - Absorption panel behind speakers Back Wall Corners - Superchunk 3 Side Walls - Absorption panel above the heater and covering the lower part of the window. Back Wall - I was considering building a couple of small movable - i.e., on a stand - QRD Diffusors but I might add those at a later date and just go for a couple of absorption panels. I initially wanted to go with the Live End Dead End idea but the dimensions of the room - i.e., it's so small! - make that difficult. Option 2. Front Corner - Superchunk 3 Front Side Walls - Again, I was considering the QRD Diffusor; if not, I'll go for the panels. Middle Corners - Superchunk 2. The one by the door should be able to slide to the left or right to allow for easy access to the door. Back Side Walls - Absorption panels to deal with first reflections. I'll have it in a way that tries to maintain the symmetry; I'll mirror the chimney breast by having the two panels on the right wall out as far as the those that will hang on the left wall. Back Corner - Superchunk 1 Okay, so my questions... Which layout will be best? I know there's no absolute way of knowing until it's done but I'd like to have a target to focus on. There's a little more space in the second layout and better access to the door, but the first layout seems more conventional. Should I go for the QRD diffusors or should I just fill the space with more absorption panels? Will the first reflection treatment on the back walls of layout 1 be sufficient? It was because of the awkward angles of reflection and the limit space that I decided to modify the superchunk design. Which type of plastic should I use to cover the corner chunks? Further to that, are the materials I've proposed good to use for this project? Very subjective but how important is it for me to build a cloud / hang a couple of panels off the ceiling? Is there an issue with not adhering strictly to the equilateral triangle rule regarding monitors? Same again for the 38% into the room rule? Being directly behind the listening point, will the electric drums have a detrimental effect on the acoustic treatment? Is there anything I haven't considered that needs to be added? By the way, my budget is £500 - around $800 - and I've managed to source everything apart from timber and the covering materials (burlap and plastic) for £300, leaving me around £200. All comments are welcome; forgive me if I've made any basic errors and thank you in advance for your help.