Lighting for a 30g with SPS.

[Stab_Master_Arson]

I have decided to take the plunge into sps before Christmas. I have a few questions though. I DO NOT want to skimp on the lighting and I am looking at some Hamilton or PFO canopies from J&L. Since I live in a condo, The max size tank I would feel safe keeping is a 50, I have a 30 right now but I may want to upgrade. I want sufficient light, but a canopy that can be placed on a larger tank down the road. What wattage would you guys suggest? I have a 30incch long tank that is 18 inches deep. I was eyeing some of those 96wx2 pc and 400w x 2 mh fixtures...is this too much? My knowledge on MH lighting is limited. I also keep a bunch of softies like leathers, zoos, button polyps, hammers, torches, etc and i do not want them to be fried. Any help would be appreciated.