I just added the last step today.
So here's the thing. I put my dig on the Flysky GT5 ch6 analog switch. I think it's much easier than trying to perfect the ch4 3-position. Set the end-points at 4wd, and locked rear. Somewhere in between will be your freewheel. It actually doesn't work out too bad with the analog dial.
This thing deserves the name goat. I don't have any upgrades yet, and it was climbing stuff with ease. Once my front brass weights get in, things will pretty much be cake. If I dial in the suspension height, it'll probably get even more ridiculous. It was doing so well, that my 7yr old was driving it up things that take more effort from me with regular trail trucks.
I already want to lower the Capra, and see if I can add overdrive to it.