Needs advice.

Hello folks, My wife and I are currently looking at buying a home, and one of the biggest subjects of interest is what space I will be utilizing for setting up my recording and mixing area. My only real concern is mixing and very basic mastering. The drums will be programmed, the guitar/bass will be direct-in, and the synths and keyboards will be software-based. I will be sending my mixed product out for professional mastering, as my degree is in music composition, not audio engineering. I will be building a stand-alone isolation booth for vocals. We currently have an offer in on a very nice house that is in short-sale, so we are still looking around and hoping for the best. What makes this house stand out is the bonus room above the garage. It would be a perfectly isolated space from the house, giving me a nice getaway from whatever is going on downstairs. It is, however, a large space and the dimensions are a concern. The room is 12' wide, 19' long, and has a 8-10' ceiling, which is slanted about 3' out from the side walls. Along with the laminate floors, the room is very active, especially in the high frequency range. I've considered setting up some simple partitions to wall out a space, but I'm not sure if it is worth all of the work and money investment to chop up the space (heck I can't even really estimate the costs). I've also considered just hitting the walls and ceiling with spare use of acoustic foam, but I'm not sure how well this will work, or how much I'd even have to buy for what I'd be using it for. If the verdict is that I'm looking at a huge investment cost to make it flat enough to mix, I guess I'd just be better off using one of the spare 11'x10' bedrooms for my projects. I've attached a cell phone picture of the room being considered to give some reference. Again, any input at all would be exceptionally helpful.

Welcome! If you don't have high isolation needs, then that room could be made to work for recording and mixing. You will want to build enough treatments to handle the corners, first reflection points, and other bits needed to get the room response where you want it.