Heavens...why would you go to Texas? Here in Colorado our saying is "the best view of Texas is in the rear view mirror".
How long a trip are you planning?
Leaving from the Sacramento area, I would head East, go to Utah and see the five famous parks. Then on into Colorado is time allows, then head into Wyoming and up to the Jackson Hole country, if you don't have time for Yellowstone, then take Teton Pass West from Jackson and head on up into Idaho and then into western Montana, and then into Washington State.
Having made several trip to Canada, going up through Sandpoint, Idaho and up to Cranbrook, you get to see some of the beauty of British Columbia.
Just some thoughts. More detail if you like.