We are converting a small, deconsecrated church into a community center. I'd like to have Friday movie nights. I don't need audiophile quality and my budget is not expansive, but I would like it to sound good. The space is approximately 46' long by 25' wide -- 13' ceilings. By the time we are done, it will have hardwood floors. I'd like to use Polk in-wall speakers -- two rectangular in back, two round ceiling speakers on the sides, two rectangular on the sides of the front, a center speaker in the center of the front and a free-standing sub-woofer. My question is: what Polk in-wall speakers would be suitable for such a large space, without breaking the bank? I haven't selected a home theater receiver yet, so I have some flexibility in that regard, again subject to a reasonable budget. Many thanks for any help on this.