Can I convert my W.60 Visa Exemption to a Non-O Visa for marriage while living in Krabi?

Guys-

Living in Krabi with my Thai Wife (we got married in Krabi last year)

Entered recently on a W.60 Visa Exemption.

Have a 6 month rental lease.

We want to take the route of Non-O 90 Day Visa (marriage) and then extend that visa by 12 months

I understand a requirement for the extension is 400,000 baht IN A THAI BANK ACCOUNT in my own name

My issue is I CANNOT OPEN A THAI BANK ACCOUNT in my own name whilst I am on a Visa-Exemption

Hence- my reason for converting my Visa-Exemption to a Non-O 90 Day Visa (marriage) would be so I can take THAT visa to the bank and successfully open a Thai Bank Account, to fund it and have the funds ready for the one year extension stage

So it’s illogical to expect me to have funds in a Thai Bank Account when first applying to convert to a Non-O, if I cannot open a Thai bank account without FIRST converting my Visa-exemption to a Non-O, which I can THEN approach the banks with, to open the account using the non-o

My Plan Of Action:

1. Convert W.60 to a 90-day Non-O (Marriage) from within Thailand (Krabi Immigration)

2. Use that new Non-O visa to open a Thai bank account easily

3. Deposit 400,000 baht and let it season for 2 months

4. Apply for a 1-year extension before the 90 days ends

MY QUESTION:

Would Krabi Immigration accept this logic and accept this as a basis/purpose for wanting to convert my current Visa-exemption to a Non-O 90 day Visa (marriage) from within Thailand?

I have all the other requirements met.

Cheers guys.