Hey you've got perfect timing on the pics! I'm getting ready to install some 15" travel Doetsch Tech shocks in the rear of my truck on that's exactly one of the methods I was looking at. That being off the top of the spring plate. Unfortunately I have about half the lift you do, so I'll have them protruding further into the cargo area.
Could you still run a rear seat if you wanted?
Can you tell any difference with the shocks, or do you really have a good comparison since you just installed the springs too?