I'm a lucky chap, because the wife has approved me having a room in our new house for my video editing business. I'm not so lucky, because the room is not exactly built to sound studio spec, being oblong and with a sloping ceiling.
I want to make the best of a not-so-good situation, and see if i can make the room sound, if not good, then at least acceptable, for mixing audio for video.
The room is newly built with about 4 inches of isolation on the long walls, no isolation on end walls as they're contrete seperating our house from the neighbours. All walls covered in a double layer of standard drywall. Floor is hardwood.
Size-wise, were talking a room thats 366 cm (I'm European, so pardon my unit

Setup-wise i have a couple of Yamaha HS-80m monitors, and a 27" Cinemadisplay. On the wall i plan to mount a 32" TV for monitoring when editing. The missus has required us to have a sofa bed in there as well (which will double as seating for clients), so the layout options are pretty limited.
Now to the business. I plan to install bass traps of some sort in the corners, and some diffusers on the end walls. I'm well aware that the sloping ceiling will mess everything up, but thats what i have to work with.
Should i focus on getting the monitors further away from the wall, or will a couple of bass traps behind them make up for the poor positioning? I would love not to have to move the table further back into the room, as the space is limited as it is.
Sketchup model can be found here, and thanks in advance!