I know there are shop at CW for photocopy and photo services. However, your visa application has to be done at Mueang Thong Thani complex, not sure if there are shops there to take photos.
Yes that is correct. The non immigrant O visa is good for 90 days and before the end of 90 days, you apply for the 1 year extension of stay based on Thai wife.
400,000 THB in a Thai account if you want to change to "Thai wife" Non-O. The 2 months seasoning requirement is not required at this point. If you want the Non-O retirement, then the amount is 800,000 THB. Again, no 2-month seasoning required at this point. But it is better to check with your local immigration about the seasoning of the funds for the initial Non O visa.