What size fittings and air lines

[lo72]

I have a few questions relating to fittings and air line. I'm working on a 70 Chevy shortbed and I recently ordered the brackets and bags (4) special from suicide doors:. My questions relate to fitting size and composition and air line size. Right now i'll be running it on schrader valves and my shop compressor. I'm not really concerned with rise time and such just a good ride and adjustability, will add the air management system when funds permit. I just want a low air ride! All info ,comments and ideas will be put to good use.