You will be riding the easiest part of the TAT so no issues there. I always stay at a motel that is on the north end of town, but can't remember the name. I think it's a major chain. When you come into town from the TAT you will be on Goddard. Just go straight thru town and right before you hit I25 there will be a light. Coffee shop on the right across the street, and a restaurant on the left. Turn left up the hill, around the corner, and turn right into the parking lot. Reasonable rates, clean large rooms. It's close to every thing too. There is a good Chinese place in town, and some nice bar type food just down the street on Goddard.
Too bad you can't keep going. The good stuff starts in Trinidad! Up to then it's just a warm up. Regardless, you and your father should have a blast! The country coming into Trinidad is pretty.