Will this be enough light?

[gobytron]

FYI - Mayheim - a plate coral is actually an LPS, not an sps and are lowish light corals

I would be surprised if you found that the 6 bulb tek didnt cut it for ya.
I would look for a good deal on a used MH fixture if you want to go full on sps tank, but if you just want a couple, put them near the top and you should be golden.
You'll really only be able to put anything (other han softies) in the middle though.

BTW - those dimensions on your bowfront just sound awesome.
I'd love to 'scape that tank.