I am getting great coverage, and my light is only at 35% power, I am
keepings softies, lps, and sps now so the light is definitely working
as for the kit I would personally try a different controller, one that would allow you to eventually control other things as well, but if its just the AI sol, then go with the sols controller other wise you'd just be burning money (IMO)..
Greg has mad a nice change to the mounting brackets to now allowing them to swivel, mine was the original prototype, and that wasnt considered at the time it was made, so its definitely a nice bonus to have the swivel for more control over light distribution.
if your tank is a 24" cube, this light would be perfect as thats the SOLs coverage, (24") another nice thing is the height adjustment, I havent used it a lot, except to play around in the tank, but its nice to have a hanging fixture with out putting holes in the ceiling