@Daniel ******
, it's totally gonna be up to what ever school you enroll in to provide the paperwork you need to go to a thai consulate in another country and apply for the ED visa.
I think no matter what thai consulate you pick in the area they're gonna see your entry history to thailand and think you're glomming onto an ED visa just to stay here longer (which is what you are doing).
Many MANY people have been denied ED visas when the consulate sees they've been living here for a while on other options.
I'd say talk to where you're going to enroll in, be honest with their assessment AND definitely use the consulate they recommend you to use.
Not a person on here can tell you whether you'll get the ED visa issued or not..