Andre,
Thanks for chiming in! This is where I'm stuck. I can't figure out how to make the complete sketchup file because the way I see it, everything kind of hinges on the angle(s) of that main wall.
My desire is to make the CR as perfect as I can for my room size and budget, and design everything else around that. When I try to draw a layout, I can't get anywhere because I don't know what the CR front wall angles need to be. If I know those, I measure out 10 1/2" for my inner wall thickness, and measure in from the perimeter of the building 5 3/4" for my outer wall thickness. The space left between is what I have for live/booth space. If I was just going to leave it as a rectangle, or if I knew the exact angles to make the wall, I could send you a sketchup file easily. I'm in the middle of drawing it right now but can't get around this bump.
Going crazy,
Nathan