Thanks Rowyco.
From what your saying then I'm better of getting a single entry visa then, correct?
I will want to go to Australia, once maybe twice a year, to visit family so I just need to get a reentry permit for these times and all will be good?
I checked out the thaivisa thread as suggested, I do meet the requirements, so no issues there, and I will be staying long term in Thailand so intend to attend my classes.
Cheers