Its the same everywhere with schools out of town.
7kms out of town seems a short distance but demographics change quickly.
To say there are schools nearby that are over crowded is not relevant. Out of town, Thai parents generally want their kids to go to the nearest school, walking distance if possible, so they don't have to bother with transport.
The main issue is the amount of small schools around. Our village is only 9kms from town. Within two kilometres there are 4 village schools. About 60 students and 4 teachers in each. All of them have an assistant director and director.
These schools could easily be merged. Land 3 of the schools are on could be sold. This could pay for development at the 4th school and the purchase of a school bus to pick the kids up if they need. The teachers could all work in the one school.
The problem? As always it's down to the hierarchy. My plan would eradicate 3 director's jobs and 3 assistant director's jobs.
Firstly, police have nothing to do with it.
Secondly, stamps in passport have nothing to do with a work permit.
Thirdly, you say "don't need F all". That means you do need something. Double negative, and you're a teacher?
I looks like you are effectively going to be a digital nomad.
Lots of digital nomads in Thailand.
The Thai government admitted a while back that there is a grey area surrounding digital nomads.
Right now, no issues. Live in Thailand on a Non O. Do your work in the confines of your own home, don't tell anyone what you do. No problems will arise. There have not been any reports of digital nomads getting into trouble other than those involved in illegal practices.
There is no way you'll get a visa or work permit and immigration are aware of that. As with many things, Thailand are miles behind with such issues.
No tax to pay in Thailand.
The OP asks about a visa agent. Not lawyer.
A Lawyer is unlikely to get involved with bribing immigration staff which, as yet unconfirmed, is likely in this instance.
30 minutes is right. Not bothered if you don't believe me.
Bearing in mind agents fees are corruption payments, you are not sharing your wealth with the needy but are making the well off better off.