Choosing right Compressor

[ibad57]

Im looking to chose the best and afordable comp. for my setup. looked at Viair models 380-400-460 and also looked at zineth models but need more info than venders offer like amp draw for each. With out ordering too small a unit that pulls lots of curent and possably over work the unit, I could use some advice.
First of all 72steepside w-4 bags 8x 3/8 valves 5 gal air tank with auto pilot controlls. first of all how many time can I lower body all 4 and raise on one full tank with compressor unpluged? and fill time would be helpfull to know for each.
I don,t want it for a lot of play time but on occation what can i expect with a 5 gal tank? thanks for any advice