help me figure out a decent air bag system

[brans72]

So far figured out use a stage one front and rear from Porter Built minus shocks since already have them. Then maybe use manual valves from http://dloesvalves.WebStarts.com/index.html. Stuck on what size tank and compressor/compressors to use. What else would be needed and recomm for other parts like tank,compressor,etc. Remember this has to be budget friendly. Any help would be need (truck is 67 c10 with 83 front cross member) and plan to notch/drop spindles. Thanks guys.........