You must first decide what types of animals you want to keep in your reef. If you are interested in soft corals and some LPS
corals you can get by with CF
lights. I would ditch the glass covers so you get better light penetration. If you are interested in SPS
, clams or high-light anemones you should consider MH
actinic supplements. Either way, this is not going to be very cheap. Lighting is the most expensive part of a reef tank (as I am sure you are figuring out). As John mentioned, buying retrokits will save you money if you can install them yourself.