Winterizing 2014 Minnie Winnie 31k question

How cold will it be in Texas where you live. I live in Northern Nevada and I empty the fresh water, open the low drain valves and blow the fresh water system out with the adapter you put on the city water hose connection and blow open the facets and use 40# pressure to empty the system of water, make sure while hooked to air you hole the flush valve open to get that clear of water also. Usually when the temp gets real low I add a 40 or 60 watt light to the toilet area and one by the water pump. This has worked for me since moving to Nevada in 1997. If you read what Dick_B wrote he said don't put antifreeze into the FW tank, he did not say to put it in the fresh water pipe system just the hot or fresh water tank. Dick