Lighting recommendations for a small SPS tank ?

[adamRS80]

Attached is a photo of the space where my tank sits. Soon I'll be setting up a 32"L x 16"W x 14"H but currently it's a 17 gallon Mr. Aqua (24"L x 12"W x 14"H) with one AI Prime (not the new HD version), the lens is 7" above the tank and is basically as high as I can get it. Total clearance from bottom of cabinet to counter-top is 24" so basically there is 10" of space from the underside of the cabinet to the top of the tank. I like this AI Prime but not sure that I want to buy another one and be married to this particular brand and model. I've been considering a 24" T5 fixture, or adding another AI Prime. I'm not sure that the prime is strong enough for SPS but I'm currently only running it at about 65% and would eventually have two. I realize that I have no corals so I'm really just asking for experience on whether the Prime is strong enough and good enough for decent growth and good color. I've seen the Kessil lights at Salty Fish, they look awesome but I'm not sure that I have room (height) for them or if I even need something like that.

I know this is a never ending topic with many different options. I just thought I'd ask what some of you guys thought.