@Cory *********
ok, hang about,
when you APPLY for the 90 day Non-O visa inside the country it goes "under review" for a period of time and you CANNOT exit the country during that time ๐ฎ
Most offices have a 14 day under review but Chiang Mai and a few others have a 20 day one.
SO you need to make real sure IF you apply for that Non-O visa you hang tight until you get it stamped in your passport and get the new 90 day stamp
Once you have that then you can buy a re-entry permit (which will only be good for that 90 day stamp) and can exit the country and come back on it