buying bagged truck looking for advice

[stroker87]

Hi every one

I came a cross a bagged 96 gmc (i know i'm in the 87 section but theirs more action here)

its a simple setup 4 bags 2 link with a pan bar in the rear a switch to control the front and one for the rear engine driven compressor and a 10 gallon tank c notch rear frame

never messed with air bags before so dont know whats good or bad? what should be looked at or watched out for?