is did this in BKK in March this year and was also required to have the 800k in the bank for the initial 90 day visa. I believe it needs to sit in the bank 60 days prior to applying for the one year extension; so in that case it kinda makes sense to require it at the initial 90 day application.
i believe one must use the 800k method first year. Just because you will not yet have a Thai bank account to transfer into when you first arrive and apply for the non-o