It's Mexico...I'd say there would be no problem, generally speaking.

My Grandma spends the winters at my place in Vallarta...the general stay allowance is 90 days. When she looked at her entry visa card, she became concerned since she was staying for about 117 days, so we traveled to the airport to ask an immigration representative. He literally scribbled out the 90 and said, "How many days you want, seņora?"

That said, you have plenty of time to get them renewed right now...without having to pay expedite fees...why take the risk of ruining your vacation?