Wishin’ ya luck. I’ve just got to the point I’ll only stay during the winter tourist season. Can’t take the heat and humidity. I’d head south but I’m just not a beach guy.
I might also add, when I left the country, I renewed my visa in Malaysia and was back the next week. 
Also, over the last five years, Chiang Mai Immigration procedures have been vastly improved where the staff doesn’t have the pressures on them they once did.
Your departure date in your passport most likely is good enough to verify when you left.
My experience with Thai immigration was being made aware I had overstayed my visa by two months. It was a misunderstanding on my part. In any case, the Immigration police recognized it had indeed been a mistake. They warned me I needed to leave Thailand immediately and leave Chiang Mai directly out of the country. I was charged ฿20,000 and it was marked in my passport. Since then, returning to Thailand, obviously my violation would be noted. When immigration notices the violation on my passport, the only response I’ve ever seen is a smile.
If you have fulfilled your obligations for reentry, I wouldn’t be expecting any additional issues. Showing up well groomed, wearing clean clothes, and showing respectful deference goes a long ways in Thailand.
You need ฿800,000 baht maintained in a Thai bank for a year, and if you deposit ฿65,000 over that year you can withdraw the ฿800,000 and use the ฿65,000 for living expenses. No need to keep a specified amount in your account.