Seems you are on your way, I would have agreed with lowering the rear to match the front, but if you like a lower stance overall, then do what is right to accomplish that. I also agree there was too much forward rake originally.
FWIW, NAPCO 4x4 conversions back in the day added a live axle up front and added 4" blocks to the rear to level the truck out.
The thing that is deceiving about these trucks is that the wheel wells in the front fenders are taller than the rear fenders' wells, making the spacing between fender and wheel appear uneven between front and back -at least to me. Being a fan of the taller truck/and forward raked stance, I raised my rear end to visually even out the wheel well spacing by adding 2" blocks at the back. Everything else about my suspension is OE spec, new.
Personally I wouldn't mind taller, yet.