Stanley P. Pickens wrote:
The current building is 500 seats in 3 long sections with aisles in
between, has a 21 ft celing (OMG!) is @ 90ft deep by 65ft wide, the floor
slopes downward to an 4 ft elevated stage with curtains up front and a
stage depth of @28 ft. Yes, I'll get precise measurements today and post a
link to a pic.

What really needs to be known is what type of events will this system
be amplifying and what are the expectations as far as volume. The
Peavey powered mixer and speakers you mentioned would be sorely lacking
if you had to amplify a singer accompanied by backing tracks on CD at a
reasonably loud listening level. No way jose in a 500 seat house. Now
if it only needs to amplify someone speaking and you're ok with rolling
off the lows on the voice you might be ok.

Dan