it's all the same as your last extension, but you are starting over, and have the bulk amount in the bank instead of monthly payments, so it is the same, with the same documents. This time though you have to do it all again when you apply for the one year extension, which requires all new updated documents again as soon as the immigration office you use will let you apply for the extension, as your bank money is already seasoned.
Bangkok Bank, Kasikorn Bank, and SCB bank, are the only Thai banks that do not have the bt50,000 limit on non-swift international money transfers. All Thai banks accept any amount when the transfer is done with a SWIFT international bank to bank transfer.
all you need doing it in person at Chaeng Wattana immigration for the 90 day report is the form, your passport, and if they ask, a copy of your TM30, but as long as it is on file in the computer, and the addresses match, they won't ask. You don't need anything else, no copies of your passport.