IF you’ve been going to classes while on an ED visa, for all of the 2 past years -

getting the 3rd year shouldn’t be an impossible task, even upon re-entry you’d be able to demonstrate strong Thai language skills after the past 2 years.

I’ve got friends and seen people at IO counters when able to converse in Thai be treated much more understandingly (when able to linguistically prove they’ve actually gone to the classes).

If you haven’t though, then best is to go save up $ and the come back with the DTV or get sponsored for a work permit, as the other long term ish visas are even more costly.

Good luck!