I don't think you can get a reentry on the initial 90 day non-o, only on the 12 month extension. If you leave, you have to start over until you get your 1st extension.
Assuming your embassy doesn't provide income verification....
฿800k in Thai bank for 14 months (yes, you can draw it down to ฿400k and put it back). During the last 13 of those you can deposit ฿65k/month from foreign source. Applying for your 2nd 12 month extension you can use the ฿65k/month. You can then use the ฿800k however you like.
I've heard this could be immigration office dependent, but it is how the law is written.
I found that when using swift, it is best to send money to Thai bank in your country's native currency. Difference between what my us bank gave and what Bkk gives is significant ฿2-3 per $. My bank also charges $65 per transfer. So for under about ฿75k, wise ends up cheaper.
Go to onwardticket.com. get a reservation from Bangkok to phenom phen for about $16. Do it the day before you travel. The reservation is valid for 48hrs. U can just let it expire. Should be for within your first 60 days.
You don't need an RC to buy a car, you need it to transfer it into your name. Just make sure you have a formal bill of sale with you while you drive around and wait for the RC. You'll need the bill of sale for registration too. In Hua Hin, a few hundred ฿฿ gets your RC's in about 10min. I got 3 first time. One each for scooter registration, bank account and driving licenses.
Again, in hua Hin, all that was needed were photos, copies of passport info and visa pages and copy of lease agreement.
Not when you're from USA. "Income" will only qualify you for the non-o visa. You will still have to season 800k in a Thai bank 60 days prior to your first extension.
Welcome! I used to live in Gold Hill and up Antelope Creek a long time ago.
As others have said, much easier to do evisa from USA. Banks are then much easier to deal with though some will still deny you until you get your 1st 12 month extension (SCB).