sounds to me like the OP just wants to buy the Rohloff speedhub. He said himself money is not really an issue so i say DO IT!
You will never ever ever have to adjust the gears again, and with the kind of riding you are planning on doing, you will probably never even have to change the oil in the hub except for maybe when your grandchildren inherit it. If i had a couple grand lying around, id swap out my nexus hub for a rohloff in a second!
the hell with learning how to adjust your deraileur, get the speedhub and forget about it!
Be happy!!