What are the requirements for applying for an OA visa from outside Thailand regarding income verification and bank accounts?

I'm still confused. I am trying to go the OA route and one must apply outside Thailand (TL).

I won't have the 800k thb (no comments please) but I earn 100k thb each month social security and have for 1.5 years. Soon to start collecting on a pension, LTR eventually). The US LA Consulate page has three options for income verification for the OA:

1. 800 thb in bank last 3 months;

1. income certificate for 65k thb (US embassy does not do this)

2. "or a deposit account plus a monthly income totaling not less than 800k thb (in one year). In the case of submitting a bank statement, a letter of guarantee from bank (an original copy) is required."

It goes on to say "Recent bank statement showing the applicant's name and ending balance of no less that $30,000 or proof of monthly income of not less that $2500/month along with the current bank statement showing incoming income."

Question: If Im outside, how would this have to be in a Thai bank? Can't set one up without a long-term visa.