You will enjoy the trip...but be sure to drink plenty of water and go slow the first couple of days...there is a lot of difference of elevation from Houston! (I'm from Texas too)...The drive from Durango to Silverton across the Million Dollar Highway is awesome...go slow and enjoy the views...We have rented jeeps in Ouray and explored some of the 4 wheel drive roads...Also the train ride from Durango to Silverton is pretty...My daughter and I enjoyed it (we asked for the caboose)but hubby did not like the black smoke. Take plenty of pictures. You can ride it to Silverton and then take a shuttle back if you do not think you would enjoy the entire train trip. I would do it again if I ever have the chance...We love the area, you will too....Have Fun....