After a few, maybe just a couple of transfers via Wise, you won't have to chose reason yourself if using same reason. Wise will use the previous one automatically. For me "Funds for long term........." is always there. I just have to enter the amount. Pretty neat imo.
I corrected his post.And the reason "Funds for long term stay in Thailand" is very important, not only for the correct type of visa at immigration,but for the possibility to repatriate money in a Thai bank if you decide to go back home. The 400k or 800k must be transferred from abroad.