If it is only for 3-4 months you can say you are ony visiting, college students do it all the time. Military is a differetn ball game. However, depending on what kind of job you are working also dictates if you should change your tags. I have been where I am at for 7 months now and have only changed tags and I am keeping my insurance where it was at to save money.
One of my previous moves, I went 6 months before I changed states, and that was with my wife working AT the police department. Just pay the insurance and tags online, and your tag in enough time to get the new sticker in Texas.
sig pic courtesy of GBALT05