Studio Help/ Questions

Hi, This is my first post here :), but I could use some help. My production partner and I produce all sorts of music from Dance to Game Scores. However, we feel we need to use our studio space more wisely atm. We have a bunch of gear strewn around and no real acoustic treatment etc atm. Our dilemma is though, we are not allowed to build any ways or change any existing walls :( lamer I know but the person we rent the space from has that policy. So any tips or anything you can provide will be of up most appreciation. I'm working on learning the sketch up program but for the time being, I have drawn these floor plans in Photoshop so you can get an Idea of where things are placed atm and of the dimensions of the room. Now, the other question we have is, the walls of the room actually angle up into the ceiling except for the DJ/Vocal Booth and hall way to the bathroom. Will this be a problem for acoustics?