Lifted F250 with 35 inch tires

What size wheels are you guys running? I currently have 16.5 inch wheels. The problem with them is that it is really hard to get BFG All Terrain KO tires, 35x12.5x16.5. They are always back ordered 6-10 weeks. Right now I need 2 tires. Anyway I was just thinking about buying new wheels and tires so I don't have this problem in the future. If I buy new wheels what size do I get? 17, 18, 19, 20, 22? I like how the truck four wheels and drives now with 45lbs air pressure.