it seems like u have been asking about lotsa stuffs...
does your tank come with an overflow compartment?? if not, how are u going to utilise a sump?? if yes, then how come no sump?
for skimmer, u might wanna consider other brands..but if u insist on weipro, then go for the bigges set...i tink $50 should be ok for 2014...not too sure...
lighting issue depeneds on wat u wanna keep..FOWLR? LPS? SPS?
FOWLR, any light will do, even normal flourescent...if u want LPS/SPS, invest more on the lights...for t5, u probably need at least 6-8 X 54W...if not MH 2 X 150W would be just sufficient for LPS and 2 X 250W for SPS...