Having visited Houston in the past, I would recommend several things:
1) Get a toll tag.. Lots of toll roads in Houston that you will want access to, without getting a ticket.
2) Learn to speak Spanish. Lots of people around that I could not communicate with and wish I could.
3) Purchase a house close to where you want to be.. Travel across the city is a major pain, so minimize driving if you can.
4) Buy a truck... Not a small truck.. A regular truck... Everybody in Texas that is anybody has a truck...
5) Learn that meat is required in every meal. Its what's for dinner... breakfast and lunch too.
Everything is bigger in Texas, so just get ready...