Unlikely a Thai wife can go to the US unless she has a spouse or fiancée visa, a green card or US citizenship. Very long and difficult process for sure. My Thai wife got to the US because she outsmarted every person standing in her way and there were many. Left up to me, I would have failed to complete the task and I’m smarter than most people, just not smarter than my wife. Good luck.
So..the build begins in November and you arrive in February? By the time you arrive there is nothing to oversee on the build unless the builder abandoned the job part way in. Likely you will be disappointed because you can’t oversee a Thailand build from thousands of miles away. That was my experience.
The Myanmar/Thailand border is the Bilauktaung mountain range. I would look there. I live in Suan Pheung, Ratchaburi and the weather is excellent from November through February.