Well the rear shocks are not that long and you can fit something longer and take advantage of more travel.
The big issue is the front shocks which are too long. And unless you run a limiting strap you risk damaging CV's.
I glad it works for you. Your rig is extremely custom and well built. Everyone uses their trucks differently and load them differently. But as a general rule, OME springs are not properly used. Heavy overload springs without carrying an additional load will probably not make for a nice ride. And the fact remains ARB did not intend them to be lift springs. The lift is a byproduct.