I don't think you have anything to worry about running 10k oil changes. My ex-employer has a '96 1500 with the Indianapolis Pace Truck package. 5.9L engine. Since new, he's run synthetic in it, changing it at the quick-lube places. Intervals? Whenever he'd remember, which is anywhere from 10k-20k. The truck is used for deliveries, and quite often it has been overloaded. He passed 200k sometime last year and the motor keeps going strong. It uses a little oil, but the "oil light only comes on after about 20k". Which is not that much actually. The weakest link in those trucks, from my experience, is the tranny. His went at about 180 with hardly any servicing during its entire life. Decent truck.
-Paul