Good starting point would be 25 pilot, middle clip postion, 280 main, 1.5 turns out on the air screw. I would say get 21cc domes just to play it safe. I had 20cc at about the same elevation and was cranking 160 psi. Do you have a timing plate? If not spend the 30-40 bucks for one and set it at +4 and you'll be pretty happy