I would also check out the A/C system soon. Check outlet temperatures on the engine-run A/C (look for variations from each vent of 5F or more); consider having the system depleted and having the shop hook up a vacuum pump to see if there are no leaks; I would also have the accumulator/drier replaced before recharging. Hoses can be rebuilt if needed, and there is no real reason to convert to 134 refrigerant as the old 12 is still available and does a better job short of changing out the entire system.
In Texas, A/C is NOT optional for remaining alert and mindful behind the wheel. There are some very good A/C techs in this state as there are in Florida and Arizona.
Good people here:
Automotive AC Information Forum - ACKITS.COM
Now is the the best calendar time to do this work, before the heat of summer (starts no later than mid-May) starts to back up the shops.
Also check the outlet temps of your roof A/C unit[s].
Also, check your unit for places for bugs to get in. Where I live there are, alone, more than 60-species of mosquitoes. You'll want to familiarize yourself with how to avoid mosquitoes, chiggers, ticks and spiders. You'll also want to learn how to recognize and avoid rattlesnakes and water moccasins. Hiking and outdoor living need a bit of precaution.
All the best