says it's too subjective. There's no one company which would suit everyone. Suggest you seek out Robert Jackson who's a broker for all the main companies and discuss your situation and requirements with him
That's nothing to do with a re-entry permit. The 300 baht tax is simply Thai government having a laugh watching the Cheap Charlies go into meltdown 🤣
Unlikely you'll get six months of freedom on an ED visa. These days you have to attend class at least a couple of times a week, and extend every 90 days. You'll get 60+30 off a SETV, and then with a border bounce another 30+30, so you're getting close to your target
Your volunteer foundation is the best approach. They have to complete the paperwork and assist with your work permit. Perhaps best to discuss with them