Like mentioned, removing the two bottom leaves usually lower the ht by the thickness of those leaves only. If you want to get rid of some lift then remove another leaf & it needs to be the the 3rd or 4th leaf.
Personally, I would throw 300# in the back while working on all the finishing touches so it has something to simulate the top, spare tire, rear bumper etc AND to help match what the frt springs are dealing with- extra weight and corresponding settling from a winch, 351 block, HD winch bumper, etc.
You have a teeter totter right now with a big fat guy sitting on one end and a 4 yr old on the other end and wondering why the 4 yr old's feet can't touch the ground.