Help a Newbie!! 20's how low

[Hottrucks]

I posted it in suspention but maybe I can get a quicker answer here..

here's the short version
I can grab a set of 20's cheap and found a 71 C10 SWB Stepside in decent shape...how low can I drop it (I was thinking air ride) I was going to cut one loop off the front and put jeep springs ( I have these) in the back for a quick drop (I can get thru that in a day) but then will gather the parts for air if it's worth it. I want to use the OEM front end and don't mind "adjusting" the front inners but need to keep them and a C notch isn't a big deal

this is going to be a low budget Rat rod that wil be a DD and go to my nephew next year and just want to make it kool and give him a good base line

it seems like the 2600 bags are the ones of choice anyone have any pics of them installed so I can copy the hardware for them front and rear

thanx
Jeff