Rob,
Contracting it out? Where's your sense of adventure man?
PT (ACQ) is good, cedar is better, IPE is best, but it's a mother to install - it's so dense that you have to pre-drill for every screw. If memory serves, Cost roughly doubles at each step, (cedar is 2x the cost of PT, IPE is 2x the cost of cedar).
I used SS deck screws when I built my deck last year, but if I had to do it again, I would just use coated deck screws. SS is a relatively soft material - the drive bit is hardened steel. LOTS of stripped heads. I prefer screws, but ringshank nails are a fine choice to.
If you have any design questions, or run into any hang-ups w/ the permit/ inspection process, give me a call.