Southern Mexico Upcoming Trip: Got Tips?

ISO: Your tips! Dates: January-February 2014 (7 weeks total) Methods: Car Key Points: Mexico City Puebla (with possible deke to Xalapa) Oaxaca and surrounds Oaxaca coast (Puerto Escondido and Huatulco) Free/Flex Time: About One Week. Would like to visit Chiapas and Palenque.