good luck, really dont know any places. I wouldnt imagine Thailand to be the Meca of bjj.
Its not a very rich country, so not much opportunity for black belts to go there and teach, making a healthy living.
Best bet would probably be to concentrate on one thing at a time while your there. Take advantage of what makes thailand famous. Muay-Thai
Train bjj when you come back to the states, or go to Brazil. You wouldnt want to go all the way to thailand to train muay thai and then get injured doing bjj and now be unable to take advantage of the best place to train MT.
Reminds me of taking a chick to dinner at a seafood resteraunt and she orders a steak. Then we go to the steakhouse and she orders lobster.. and at both places she didnt finish her meal... dont know if that even makes sense.. but do what you want with it.