Need advice on a Texas drivers license

Great to hear you are moving to Texas instead of full timing! Check in with the Texas vehicle department. They will ascertain what you need for you and your rig.

If you are going to become a TX resident then you will need a Class B license. Period. Nothing CDL based, just a standard drivers license with a Class B "add-on". It requires a separate written test of about 20 questions from the last 10 or 20 pages of the CDL license manual but unrelated to CDL stuff. Once you pass the written test you will have to schedule a driving test whose requirements seem to vary by location. My test involved driving the coach, making some turns down neighborhood roads, stopping and backing up in a straight line for 40 feet, driving onto and off of an Interstate and returning to the DMV office. All done. Good pick up your new license.

No, you do not need any type of class A non CDL license. The handbook says you only need the non commercial class A, if you drive a vehicle that could be classified as a commercial vehicle. A recreational vehicle should be exempt unless you are pulling it with something like a 5th wheel semi tractor.
The fact that you are over weight on CDL limits is not a reason to need the higher class licenses.
However, I would call Austin directly and ask about your specific situation. Then, get the name of the person who you talk to. Personnel at the various Texas DPS drivers lic. stations are very often not very knowledgeable, and may give you incorrect info. I know from experience.

No reason your CDL would be turned down in TX. Just get the Class A Non-CDL attached to it.

You would need a class A non commercial license for a GCWR over 26,000 lbs towing a trailer with a GVWR over 10,000 lbs.

Texas Driver Handbook