Hopefully I'll get the help I need here. I didn't get any response from other subs.

I'm a foreigner who used to live in the US and have since left for few years now.I'm planning a move to central Louisiana area.

I thought about landing in Houston, buying a used car from private seller , activating auto insurance (used to be protected by Allstate), and driving to my new home. It is an 3 hours plus drive. I will then register my car in Louisiana.

I have an expired (normal Class D) driving license from a different state and a valid driving license from my home country (printed in English). I will then hopefully get a LA driving license with my expired out-of-state driving license or hopefully not to be tested again. Could anyone chip in on what I'm overlooking legal wise? Thanks

edit: I have never been to Houston or Louisiana. So, I don't know how vigilant polices are or anything I need to watch out. But my few interactions with police on the roads elsewhere were positive and courteous. Or please feel free to suggest any possible ways I should go about this.

The reason I'm landing in big city is because of abundant choices for used car that is in my budget. I'm deadset on getting a Prius, and have only seen plenty of them in Houston Craigslist.