1) Bleed RABS valve. its on the driverside frame rail, only takes a box wrench. Bleed it like you would the wheel cylinders
2) Bleed the wheel cylinders after you bleed RABS
3) Readjust the brakes, check the edge of the drums to see if the pads have grooved the drum. If the drums are over 100k miles old, then more than likley they have grooved. They can be replaced, but it isnt completely necessary, you can turn them, or just force them on over the groove.
i went through the same thing this weekend. All that was wrong with mine was the fact the shoes were glazed over and the ajusters were down at 1 or 2 threads. I put one side at 10 threads out, and i think the other worked perfectly at 7 or 8 threads out. Go by whatever feels better (turning the drums) when you put the drums on