if you have difficulty filling out the form, you can ask questions here. There's only about 5 questions and 4 documents you'll need to supply... Not very difficult. Maybe difficult for a YouTuber though.
don't listen to agents! Go to the evisa website and apply for a non-o visa before you come. The process is easy, but a bit tedious. But very doable without paying someone to hold your hand.
If your get a tourist visa, it is valid for 60 days. If you arrive without visa and you're from one off the 90 exempt countries you will get a 60 day entry stamp. Both can be extended by 30 days for ฿1900. Any time you exit the country without purchasing a reentry permit automatically cancels whatever visa your on
Depends on the amount your sending. Break even point with my credit union is about ฿150k. Below that wise is cheaper. But you'll have to do your own calcs. Good luck getting your bank to quote you a rate. Probably just ask what it was the day before.