c20 burb lowering question ( Air Ride )

[juddss]

I have a 1971 GMC C20 suburban and was going to static drop it with GMC Paul's lowering springs. I think I have changed my mind and would like to install air ride. Will 2500 bags in the front and 2600 bags in the rear work ok. Also should I stay away from the ebay airmaxx kits. I was leaning towards something like the accuair e level kits that use the position sensors because I would like to tow.
I also read something on GMC Pauls website that says 3" drop springs may require the use of either off-set ball joints or off-set upper a-arm cross shafts in order to get front end alignment correct ( any thoughts on that ) id like to lower this thing quite a bit. possible c notch the rear