That thing is bad azz.
If you're looking for more lift in the rear try a different bag. They make bags that will extend up to 12''. The bag over axle is a good setup. I have a friend that just fabbed a 3 link on a 93 sort bed step and a 97 dually with bags over axles. If it were me i would keep the rear set up the way it is. Good luck to you with your electrical nest (looks scary) Keep up the good work.