Impressive looking for sure but what a phasing nightmare! Nix those little piggy-back tops or place them upside down on the bigger ones. Also, splay the outside tops so they don't overlap freq's with the inner ones. Great job on coupling the subs, must of really thumped!
Much better! Very clean set-up and the subs are spaced far enough apart to eliminate any power alley issues.
Now for my input on a school set-up. An EV system was mentioned earlier and EV rocks! But... Don't go in with a single amp cause you're asking for trouble. Carolina has 3 or 4 active subs, so if one goes down at a school dance, his system will keep chugging away.
I'm not saying they all have to be powered, here's my take on subs.
Two active - Good
One active with one slave - Bad
Two active with two slaves - Good
Two passive with one amp - Bad
Two passive with two amps - Good
Four passive with two amps - Good
I hope that makes sense.
In my future setup, I'll be moving my verticals out a bit and placing some 12's in between them and the booth. The 12's will be for fill for school dances and become my speaker of choice for weddings. They should arrive soon with my new amp.