MHO I would go straight for
MH lights.. The ones at Home Depot are not going to work as they are a different color temp I believe 5500k and you want 10k bulbs.. Some use 20k bulbs which are a more blue color..
MH kits are on ebay for around 300.00 for a dual 250 watt minus the bulbs which should be plenty for your tank.. Bulbs for
MH lights usually run for $50.00-100.00ea
PC lights will work however you will find alot of corals demand
MH to really thrive and live comfortable as with clams.. Here is a good Retro kit that should suffice for your tank as well as most corals low light excluded..
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2355098714&category=3212
I have not purchased from them but It is the kit I have been debating for quite some time.. All that would be needed then is the
MH bulbs as the VHOs are included and fitting the kit into a hood.. I currently have 330 watt PCs on my 55gal which are nice but I hate finding a coral or... and finding out that it does best under
MH lighting and fairs at best under all other lighting.. I wish I would have just went and got straight
MH bulbs but I wanted to save the Hundred or so Dollars on the PCs..
HTH,
James