This site is full of crazy chicken ladie, chicken guys, quail guys, etc, you will fit right in :)
Sounds like you have an excellent plan as well, I think they will do great for you.
You wont regret quails they are such a delight :) and welcome to byc!
1.not sure on the space im sure someone else can chime in.
tho my first guess would be 10 to 15 coturnix, 10 if some are jumbo...
Thats 18 square feet? I was never good at math...
Recommended space is 1 to 2 square feet per...