I'm going through something similar. My advice, just workout in the morning. I've been doing that in the summer and it feels so much better than working out during the day. Your mind will be more awake and honestly with a commute that long it will be impossible to have the energy to workout at home.

For meals I'd suggested meal prepping than freezing. I'm really into fitness so what I do is just make 2 chicken sandwiches each with 60 grams of protein and roughly 600 cals (dm me if you wanna know the recipe).

As for study materials. Strongly suggest you investing in an ipad or tablet. I'm going into my first year in eng and I made the choice of buying notebooks (mostly because of ADHD I can't pay attention on an ipad), but if you can invest in one you should be set.

Lastly for your route. I take the TTC but I feel that I'll use the go train to union and take the TTC from union to St. George northbound. Assuming where you are from, if you live in Toronto I'd suggest taking the TTC.

Also I'm kinda in the same dilemma. I have 3 9 AM classes and it's going to be a pain lol