your lucky, we've had our scb account locked, although it may be part of the new banking standards introduced a couple of years ago to negate money laundering. I read a report the other day around 10's of thousands of dormant accounts had been deactivated in the last year in Thailand as part of the laundering crackdown.
sorry i cant give a definitive answer on that as we live in a house we own. But that sounds adequate.include a tm30 and tm7 receipt to show your tied to the apartment.
The photos must not be selfies, all must show you and your wife. 1 in kitchen, 1 in bedroom, 1 outside showing house number and 1 other. Print 2 per a4 page satisfies the requirement. For the map i generally do a google map print on top half of a4 from CW to my home, and a hand drawn on the bottom half from the nearest major SOI to my house. You need both a letter and bank statement (i always get 3 months) from the bank not older than 7 days. Copies of each page of your bank book, make sure you have over 400k in the bank. On the day you need to withdraw 100bht or so, (ensuring your still over 400k), update the bank book, get the last page copied and replace any you might have done in preperation. Note i usually do 6 photos in case they reject any.
Speak to your sister in law, get a copy of the blue book address page and a copy of her ID to upload and you can set up an online account yourself to manage.
Unless you intend on 'travelling', travel insurance wasn't what you were looking for, as it usually only covers upto 90 days after arrival. As suggested look at a health and accident policy from someone like AXA Thailand.
The school you have enrolled with should have educated you in the documentation and timelines that are required to maintain your ed visa, which i assume requires a 3 monthly extension and a document confirming your continued elegibilty.
yes, if shes on a long term rental, as Jan said she just need a copy of blue book first page, and copy of owners ID, to set up and register the address.