Help with Organizing an Optimal Studio/Bedroom Situation

Vastman

dwardzala
I'd look at putting the desk/monitors on the angled wall  although that might be tough if you can't relocate the bed. 

 
I would try this also... avoiding parallel surfaces...
In my last design I made all interior walls of what use to be a garage, non-parallel.  Your angled wall seems to be an ideal place to disrupt the parallelism in your overall situation. Then again, that's just my gut insinct as parallel walls suck...

I think you need as much symmetry as possible between the acoustic environments of the left and right channels so they can be processed properly.  So if non-parallel walls have some advantages, still try to make them non parallel in the same way on each side.  Parallelism should only affect higher frequencies.  Lower frequencies don't bounce, they ooze, especially in such a small room.  You always want your desk centered between the walls on it's sides.
 
Also, you don't want a strong early reflection on one side and not the other (in #2 and 3 above, keep the bathroom door closed or put an absorption panel on the other side, or better, close the door and put a panel on both the door and on the wall opposite).  Similarly, you don't want lots of absoption like a bed, open closet or curtain on one side and not the other.
 
I'd move the bed as far to the right (in the picture) as you can and then move your desk/monitors back away as much as possible from the wall behind the desk.
 
If you stand to play your guitar, #3 may be better so you can back up into the space between the bed and the dresser, unless you play with your ear glued to the amp's speaker, as I've seen some do.
 
I'd then try the Leslie (in #3) as far from both corner walls as you can get it, like centered in the space between the bed, desk and corner walls.  I'd probably get rid of the nightstand if possible (unless there's two of you in the bed...).  This might cause the Leslie to bounce unwanted early reflections so maybe put some absorption on its side close to the left monitor.
 
Maybe (not sure it fits) put the bed against the right (in the picture) wall, centered facing your desk.  That would make things more symetrical and open up even more space around your desk and monitors.  You could then stand and play your guitar close to the middle of the room (and turn your amp so it faces the center of the room), but you don't want to stand in the exact center of the room, because frequencies are all screwed up there.
 
Follow TheMaartian's link above for lots of good info on acoustics and making your own absorption panels, the more you can fit and afford, the better.
 
It's pretty tight in there, with all that's going on.