1. How large is the area where you model? (Example: 12ft. X 8ft. X 8ft.)
Not sure 15'x15'x9' Sounds right. I'm assuming your wanting to know the area of the room and not work surface area, since you seem to be figuring exposure to fumes.
2. Does your modeling area have a window that can be opened?
No, the windows are trying to fall out and haven't yet been replaced so there is plenty of ventilation, a little cold in winter.
3. What scale do you PRIMARILY model in? (1/72, 1/48, 1/35, etc.)
No set scale I've got stuff from 1/72 figs to the 1/350 NX Enterprise
4. What is your PRIMARY choice of paint & thinner, and brand? (Tamiya acrylic, Testors enamel),
Testors 1/4oz and MM, enamel and Acryl, mostly enamel, but I've been replacing used up colors in acryl. I'm better with Acryl anyway. That's what I use for ceramics.
5. Do you paint with an airbrush? A rattle can? What percentage of each? (80AB/20RC)
No AB-95+% brush and <5% RC and I spray outside in the open air when I spray. Stuff builds up to be sprayed waiting for good weather.
6. If you use an airbrush, what is the approximate total volume of paint & thinner used (1oz., 50ml, etc.)
No Ab
Can you post your results when you're done with you're, I'm curious?
Come on, guys post and help him out!!