Should I apply for a dependent visa or a soft power medical visa for Thailand?

I am debating what way I should submit my application.

Option 1: dependant visa, my husband already got his DTV approved, we have funds in both our bank account.

Potential probelm: we are both canadians, he is polish and we have a polish marriage certificate which stated we are married in Mexico (destination wedding), it is translated and notarized in Canada, we do not have it legalized by poland officials. I consulted an agent before and they said it's required to be legalized which we won't be able to do as we are not in poland.

Option 2: soft power medical, I already have a letter from bangkok hospital for this purpose.

Potential problem: my fund in my bank account had only been in my bank since early September, would that be enough? I can provide other proof of funds in my investment accounts for more than 6 months.

Or would it work if i apply for dependent visa with a medical appointment letter and my current bank statement as supporting ? Or visa versa (apply soft power medical and attach my husband's dtv as extra supporting ? )

I am in hong kong now applying online via hong kong thai embassy (hong kong permanent resident) If that matters.

Thanks a lot for any input in advance.