Hey, that is a lot of stuff.
Of course you can't say you are not indebted, when you are. That's fraudulous.
I'm also not sure if I understand you correctly.
Are you living off your pension, without going to work?
Then the solution for a family father with wife and kids would be that you go get a job, and work, if you wash dishes in a hotel, it doesn't matter. You're only 58, there must be something you could find. There is a lot of tourism in Thailand, perhaps you could work as a tourist guide. Or be a stay at home Dad, and your wife finds a job, after all she is a native speaker. No job is too low, if it gets you out of debt.
And to be frank, I find the suggestion of your wife a bit weird.
No loving wife wants her husband to become a monk, unless she wouldn't mind if he is not around anymore.When I put myself into your situation, I would feel like he is trying to get rid of me while using my pension.
Far worse, your children need a father.
I may be wrong, and I don't want to cause you pain, but this is what I thought.
Also, how come you have credit cards debts?
Who caused those?
Your wife or you?
Another point. I don't think money and stay problems are the right motivation for ordination.
But who knows, perhaps they accept you, and it is all you want to do from now on.
Talk to the monks there, perhaps. You must be absolutely open.