V-10 & high mileage, need advice

The OP asked if buying a rig with 86K miles on a V-10 was a good idea. Average user miles per year are around 5K miles x 14 years = 70K miles. If engine and drive train has been carefully checked out by a competent truck mechanic, it might be good for many more miles without major overhaul expense. I would be concerned with life remaining in the roof AC unit, fridge, furnace, awning, water heater, etc. Our fridge and roof AC died at around 10 years. Tires are good for 5-6 years, by date codes, sitting parked in the sun. Replace any tires with sidewall cracking for driving safety. Have brake systems serviced including flushing and replacement of brake fluid. Have engine cooling system checked and serviced including radiator, clutch fan, water pump and all belts and hoses.