Likely, as you are probably an "Ontario resident" for the purposes of getting OSAP (you lived there in the last five years).
I know this because despite living in Ontario all of my life except for the five years before I came back to live here and go to law school here, I was not an "Ontario resident" for the purposes of getting OSAP, because I had been gone for five years.
That said, Ford may have dramatically changed the program, so make sure you do your own research before you go with what some person on the internet tells you.
An MBA in Canada has become dime a dozen as these MBA programs are cashcows now for universities. It's the go to program for international students who want to gain Canadian experience and apply for permanent residency in Canada. Rotman has a fairly big class and is not difficult to get into either. There may be merit to doing the JD/MBA at U of T depending on your career goals, but the real value comes from the JD and not the MBA. If you were doing the MBA as a standalone degree, it doesn't hold as much water as it did years ago. I don't think any Canadian MBA program is top 50 in the world except for maybe Ivey.