Before you leave apply for a 90-day Non-Imm O visa. Then extend by 12 months. You avoid an extra step that also has an extra fee. Also easier to open the bank account straight away
Go to Philippines to live for now. Come to Thailand on holiday for a month at a time. See how the visa situation here changes. The tax position is becoming more challenging for some of us. And populism/nationalism with racism seems to be growing all over the world. Recent events have shown it may be on the rise here too. Wait to see how that plays out for a couple of years. By which time many of us might join you in PH!
I opened an account at Bangkok Bank by showing a hotel booking of one month and my non-O visa. It took me 2 days and numerous visits to do it. If I did it again, knowing what I know now, I'd use an agent to open the account.