It won't be doing much of anything over Winter... Probably nothing to mow, mine is already almost dormant for the year

Agree. All the bermuda I see in Bandera is as dormant (brown) as it could be. St Augustine is still green, but it is not growing, so that's sort of a pre-dormancy for St Aug. So to answer your question, you likely won't need to water at all until April when the lawn awakens. With the tiny little roots I would not fertilize until early May. Assuming you have a bunch of weeds sprouting in April, go ahead and spray with Weed-B-Gon and you might put down a preemergent herbicide to limit the crabgrass. Bermuda and crabgrass like the same conditions, so that can be a battle the first year until the bermuda becomes more dense.

When it awakens, it will come in like gangbusters. You should mow it 3x per week at your mower's lowest setting to keep ahead of the fast growth. When bermuda is allowed to get tall, it thins out and can become even more weedy. Mowing very low will sort of train it go grow horizontally instead of vertically. Once that fast growth slows down, then you can start fertilizing monthly with a high N and low P and K fertilizer. That might be early May.

If you have to irrigate in the spring, follow these guidlines...

Watering: Deep and infrequent is the mantra for watering. This is for all turf grass all over the place. Deep means 1 inch all at one time. Put some cat food or tuna cans around the yard, and time how long it takes your sprinkler(s) to fill all the cans. Memorize that time. That will be the time you water from now on. My hose, sprinkler and water pressure takes 8 full hours to fill the cans. Your time will likely be less. I like gentle watering. As for watering frequency, that depends on the daytime air temperature. With temps in the 90s, deep water once per week. With temps in the 80s, deep water once every 2 weeks. With temps in the 70s, deep water once every 3 weeks. With temps below 70, deep water once a month. Note that you have to keep up with quickly changing temps in the spring and fall. This deep and infrequent schedule works in Phoenix and in Vermont, so it should work for you. The reason for deep and infrequent is to grow deeper, more drought resistant roots and to allow the soil to dry completely at the surface for several days before watering again. If it rains, reset your calendar to account for the rainfall.

Thanks for the advice you two! I did have a question about mowing low, in my research I think I may have come across some conflicting information. I thought you were only supposed to cut Bermuda at the high setting to keep it from burning? Or Is that only during summer months/times when it may be dry from drough/water restrictions?

I think reeljake raises his mower in the summer, but I don't think burning is the concern. I'll wait for his reply.

Correct, you cannot burn Bermuda. I do raise my height a bit in the summer to keep from mowing every 3 days though. Contrary to logic, the lower you mow it the more often it needs mowing...