Red's advice is good. There are a lot of good Hammocks out there. Your best resource is Hammock Forums. I'd recommend a Hammock from Dutchware Gear or BIAS Hammocks.
You'll also need an underquilt for insulation. There a lot of good ones from companies like Underground Quilts, Hammock Gear, Loco Libre, and Jacks-R-Better. I'd recommend a synthetic one.
For weather/rain protection you'll need a good tarp. For packability, I'd recommend a SilNylon tarp from any of the manufacturers above.
Good luck! Post pics!