alright, so do you have a canopy without the lighting? if you do, and its just an empty shell waiting for lighting, get a retrofit kit because they are made for that kind of thing. if you dont want corals, you dont need the really good high quality like Metal Halide and stuff, so probably just some VHO
or just regular fluorescents.
the powerhead that you want to use are going to be the Koralia powerheads. they are GREAT powerheads, and they arent terribly expensive either.
about the sand: dont even worry about the bag of live sand, just use dry sand because what was at som point alive is most likely dead in the bag, and so you are paying momre for no reason. just use dry sand. the Live Rock that you add will seed the sand and you will be fine.
you are also going to need an RODI
unit (which filters the water in your tap before you add it to your tank), and a protein skimmer (which takes organic paticles out of the tanks water)
if you have any more questions, dont hesitate to ask!