I use True Money for daily transactions. Supports scanning just like a bank app and you can pay at 7-11 as well. Keeps the bank account relatively clean for immigration
Go to your local immigration to get a handout of the requirements for the residency certificate. Open a bank account. Transfer the 800K if on retirement route. Get a handout to the requirements. So easy a monkey could even do it.
you must be joking. You have no idea what you’re talking about. While I have your attention maybe you should learn the basics about Thailand… one never refers to themselves as Khun.