OK, being completely honest...

The tank is sitting in the wall, FW now. BUT, if I were to go back to SW, what would I do?

1) FOWLR. Probably.

2) I'd replace the 215 with 4 much smaller tanks. All in the wall. All 36 long x 24" wide. Stacked, 2 x 2. One would be SPS only (with a tang and a wrasse). One would be a small predator tank. In between would be a planted 'fuge-type tank, maybe with seahorses. The last would be either an over-the-top LPS tank, or a general community tank.

I'm guessing that the above would be 1) less expensive and 2) a whole lot more fun!