I just wanted to update this thread.
I ended up going with an E-locker swap with 4.30 gears which replaced my 4.10's. I have to say that the 4.30's feel quite a bit better than the 4.10's I didn't expect it to be as noticeable as it is.
Swapping the front diff was sort of a PITA, but [MENTION=120071]mtbtim[/MENTION]'s video really helped.
I also had to put new boots on my CV's since they tore shortly after lifting.
The combination of new grease in the CV's and new fluid in both of my diff's has really made a big difference in vehicle vibrations. It's much smoother than before.
I was going to try and use OEM harnesses but my 4R wasn't pre-wired so I used the Low-Range Off-road harness which is awesome. It was super easy to install and works perfectly. My only complaint is that I think it should have a relay, which I am going to add - so that it isn't hot all the time. I LOVE being able to lock the diff anytime I want, even in 2WD.
I've been playing with the locker and noticed it takes a little time to engage and disengage, just like 4WD - esp when it has load on it. I assume this is normal. If I were wheeling I think I would need to lock the diff before I get into the gnarly stuff.
Overall I'm super happy with it and love that it's OEM stuff under the truck.