Be sure to set aside at least half a day for Taos (at the end of The High Road trip): Bent House, Fechin House, Kit Carson Home, Millicent Rogers Museum, Taos gorge, and if there's time drive to the ski basin.
In Santa Fe: Museum of Fine Arts, Museum of the American Indian, Spanish Colonial Museum, Wheelwright Museum, Folkart Museum, Georgia O'Keefe Museum. Eat at: The Shed, Dominic's, Cowgirl Hall of Fame, Zia Diner, Tomasita's, Maria's. Breakfast at: Pascual's, Tecolote, The Pantry.
East of Santa Fe about 25 miles is Pecos National Monument, ruins of a pueblo deserted in 1838. Excellent interpretive site and museum. Gives a small inkling of the oppression of the Spanish Catholic church and its role in destroying native lifestyles and lives.
Enjoy your stay- you'll fill every hour. Days will still be warm but nights will be getting crisp. Aspens will probably be turning at the higher elevations.
Russ