Is anyone looking for roommates or thinking about that stuff yet? I'm not sure how Waterloo is in terms of housing, so if anyone knows that'd be great.
As for studying, the OAT destroyer was good. Lots of practice, but very overwhelming if you don't know your material in and out *cough* Organic Chem *cough*. I used Exam Krackers MCAT for Orgo which was a good review, but does not cover all the stuff you need to know and doesn't have a ton of practice questions. It's very helpful in getting you to think about the material, though. ExamKrackers also has a study guide on their website if you find that sort of thing helpful--it breaks it down by hours per day and etc. I also used this guy:
http://www.freelance-teacher.com/videos.htm . He's got some videos on youtube that are superhelpful if you haven't taken subjects like Orgo in years and years.
The OAT destroyer was exactly like the OAT for Biology, Math and Inorganic Chem. I found ExamKrackers great. After studying it, I just went through the destroyer for reactions ExamKrackers didn't cover and found them in my Orgo text. I thought physics was way more simple on the OAT. That is, don't focus on super complex problems, but make sure you really know the physics behind it, how simple forces work, etc. It's essential. Don't just memorize equations. Hope that helps.
Contingency 10: I found working in science to be great in terms of challenging me and it looked great on my application if you're in a good lab. I also think a master's is a great way to go. In my opinion, both will teach you a lot about yourself. I felt a lot like you in my last year of school and wasn't sure what to do. I'm glad I chose #1. You should do what you enjoy. For me, that was science and I learned a lot about myself. I didn't do #2 because if I didn't get in, a fifth year would have been unless. #3 and #4 seem fine options to me, if you enjoy science and those areas of research. I didn't do it because I wasn't quite sure if it was where I wanted to be for the rest of my life. I wouldn't necessarily stick to stuff related to the eyes in terms of research, unless you absolutely love the lab, prof, etc. I know it's the obvious choice, but I see nothing wrong with working on something you enjoy that's not as related and succeeding in it. I did.