AIM = shit dont by anything from that website even though the prices look good/cheap. you get what you pay for. The valves to go with if you want to hop are 1/2 SMC or Parker Valves.
www.suicidedoors.com has the 1/2 smcs for 48.99 I believe. Thats all ive ever ran on my truck, but if you wanna hop on 1/2, get a bottle and a holding tank and put it at like 300 psi and it will get off the ground