First decide what kind of tank you wish to have. Will it remain an FOWLR
or will it be a reef tank? That will determine what kind of lighting you will need. Never buy things for the short term, always think of the end result as it will save you alot of money down the road.
If this is to remain an FOWLR
for the most part, about 100ish watts of PC
lighting would work very well. There are a number of combinations available but I would ensure you are able to incorporate a two ballast sytem that would allow for a seperate "daylight" and actinic bulb.
If you are wanting this to be a reef tank then I would post some additional info about the types of corals that interest you before a better recommedation could be offered.