Can I combine my retirement income and savings for a non O-Visa application in Thailand?

hi, asking for advise...

i want to change my currrent type of Visa, (1 year, non O multiple) to 1 year, retirement-Visa (inside the kingdom) .

im on my way to fix TR- Visa 60 days, and come back into the kingdom.

before it expires i want to apply for a non O-Visa 90 days. when applying i want to show combined funds 300K baht cash transfered to thai-bank account from sweden(together with bank statements) and 45K baht/monthly "early retirement income/benifit" approved from sweden embassy in bkk(certificate letter of income), to meet the total funding of total 800K baht required.

thereafter apply for a 1 year extension

my question is:

is the combination possible?

and if so -

do i have to transfer my monthly income funds into thai-bank accounts and show statements or is it enough to only show "certificate letter of income" from sweden embassy to make progress with my 90 days non O-Visa and thereafter 1 year extension applications?

thanks...

benny G