nope they won't care in the slightest. The only hope you have is that they would let you enter on a visa exempt stamp but I think that's unlikely. If you need an ID card to renew your passport it would be sensible doing both in Indonesia. Can you ask your embassy in Thailand to send your ID card to your embassy in Indonesia? Or just apply for a new ID card
there are normally 2 different bank certificates, my bank call them guarantee letters as they guarantee the funds in the bank. 1 is for the 800k baht method and the other for the monthly income method. Good luck
I would say this is not allowed under the DTV scheme. You can't interact with Thai companies or Thai clients and by the sounds of things you would be doing both.
are you sure there's not a misunderstanding here? Normally for the 1st extension you need 800k baht in your bank account for 2 full calendar months before you apply. To use 65k baht per month you normally need 12 full calendar months of transfers from overseas.
If you have a photocopy of the data page of your old passport, a printout of the DTV visa and your new passport you should just be able to show that when entering the country. You may also be able to get immigration to put a stamp in your new passport acknowledging your old passport number. But whichever way you cut it I think you are going to have to leave and return to onto the DTV
You would need to apply and once you are approved you could apply for the child with you sponsoring them. You can't sponsor a partner, only a spouse, so they would need to sort themselves out.