Are you actually being paid $1300 USD per month? Or, are you getting paid 26,000 pesos a month, and you did the math? I ask because the peso has devalued 50% in the last decade or so. This has had significant impact on families I know that move money across the border--for better or worse. But if you are working for any length of time, I would consider what of your expenses are in USD and what are in pesos. And I would not keep any large amount of money in pesos, anyway--so you will want to research money transfer services, and be prepared to use them.
Also, do you know how you will handle health care when there? Do you have a significant health conditions that may require specialist care?