Doghed
WKR
No I don't think I would go to a lot of trouble changing plans just for the Chile festival unless you're really into the food/festival scene. Its fun and great food but I would only do it if you already intended to visit the southern half of the state (Gila NF./White Sands National Monument/Desert Peaks Nat. Mon.). If so then yes it could be fun to visit a very small agg town doing what they do best.We are flying in the Sunday of the festival. Do you think it would be worth rescheduling flights to come that Saturday to see it?
Chile roasting will be happening all over the state when you're here so no mater which way you go you'll get to experience the pleasure.
My recommendation for the first part of September is similar to what some others have said. Go north. Fanta Se and Taos. Drive the Enchanted circle and if you rent a truck maybe you could even get into the Valle Vidal.