hm, if you can plan out a canopy that would be awesome. make sure you plan out the way youd like; have it be functional. you can build a good one for maybe 100-120 bucks. drill some holes on both ends and put computer fans to blow in, and towards the back have them suck the air from inside to blow outside
now that youve got your icecap 430 ballast, itll only run 2x54w bulbs, they overdrive the bulbs slightly. the next thing you should do is look for an icecap660 ballast to overdrive 4x54w bulbs, and look for individual reflectors--- i think the best are by IceCap, the SLR reflectors. youll need to buy the end caps and stand offs, and the reflectors, with the ballast. then you'll have a good setup
if you want advice on what kind of brand of bulbs to look into, look at ATI, Geisman, UVL. Youll have to pick a good combination for the color you want