Air ride questions

[1enick72]

I have lowered my truck with spindles, blocks and springs and now have bartered a deal for most of and air ride set up. I still need a few parts but need some help know what else is needed. Below is a list of parts I have;
1 Vair 460C compressor
2 Hoosier air tanks (measure 30" x 7.5") Not positive the size, I think 7 gal.
2 Air Lift 2500lb bags
2 Blitzluft valves
2 3 way switches
2 pressure switches
1 dual needle pressure gauge

I know I will need;
2 2600lb bags for the front
front and rear mounting plates
air line and fittings

I also wondered, do I need 2 tanks or can I just use 1? I'm not going to be laying frame or anything crazy, just want it a little lower with a smooth ride and be able to adjust when hauling stuff.
Thanks for any advise and help.