I don't really follow the logic.
When I previously had travelled to Thailand (my early years) I entered with aud $ (not small amounts.
I then would exchange at SuperRich green into Thai baht and deposit into my Thai bank account.
Subsequently use WISE (popular with USA and many others)
To transfer funds out of Thailand is not so simple.
DEE Money is able to do this.
For large amounts it requires additional information.
Not long ago I purchased a condo from a UK guy.
After I paid him (cash) he required proof of sale of the condo for DEE to facilitate the transfer back to his UK bank.
OP, to me your plan sounds fishy or at best unusual.
Money laundering?