Hey, it’s usually conducted at U of T’s Faculty of Dentistry campus, which is a separate building not connected to the U of T St. George campus. I advise you to check the specific address on your DAT confirmation letter.
I wish you the best for your DAT.
You will need to do really well in the last two years and wait a year so that your final year will count toward schools which take only the best two years. Doing a 3rd year will allow you to apply to more schools which drop your worst year.
Those two years so far will not get you in Ontario; maybe the rest of Canada, I'm not up to date with the stats anymore...
Roam around the forums - you will see what people are getting accepted in with... you can get a good sense of the ball park you should be in