A friend of mine, is starting a 75g reef tank.  He's having the custom built stand and canopy stained this week.  Hopefully this weekend he gets it filled.  Let me know if you need anything info wise, i have about 4 years of exsp in FOWLR and 2 in reef.  I'm working on a sps tank with softies to fill up the unused low light space.  If your interested in halides i can provide you with the info to build 250w fixture for under $90.  Looks like with your size tank you'll need about 3-4 of them.  That price includes the bulb too.  Both Tom and i have 2 175w halides with parabolic reflectors...real easy and cheap to make.