you are mistaken. I have copies right here as I have just used them. The rose border marriage certificate is a khor ror 3. The one you get from ampheur that cerifies you are still married is a khor ror 2. I am looking at them right now.
What you typically need is minimum 400K baht in the bank for two months before applying. In an account in your name only.
You also need:
Your Thai marriage certificate (the one with the rose borders.)
Updated kor ror 2 (certificate from ampheur, that states you are still married.
Copy of all pages in your passport with something on it.
Photos of you and wife inside and outside the house. They typically want to see you in the kitchen, living room, bedroom, outside, on the street in front with a visible house number.
Shouldn't be a problem whatsoever unless you've maxed out all your stays with extensions on each, 3 times this year already. Then someone might start asking questions at immigration.
Meaning if you are not seemingly living here more or less on free stamps.
Short trips. You'll be just fine. Even several times a year.
You say she is getting an educational visa. If it's a proper school/university they can help with a letter to open a bank account. My uni offers this service.
how am I wasting everyone's time? I just answered your question. If anyone was wasting anyone's time it was you wasting my time then.. Seeing as you made the post asking, and then telling me I am wasting your time answering it.