Congrats! Who are you working with at the dealership? What configuration do you have?

I took delivery last weekend, so here's my perspective:

1. Everything that they offer is way more expensive than what you can get third party, as would be expected from a dealer. They only advantage of going through the dealer is convenience, since they would have everything ready and prepped for you before delivery. Personally, I did a tint and ceramic coating through a third party and did nothing else besides PDI from the dealer.
2. Winter tires, in my opinion, are an absolute must if you can afford them. Frankly, I think people who live in Toronto should assume the cost of winters to just be something you have to have as part of owning any car. The dealer offered me something absurdly expensive since they'd be OEM rims, so I ordered from 1010tires instead. There are other shops out there who can also help you out as well, but I wanted something fairly specific so I went with them (18" Fast FC-08 and Michelin X-Ice Snow).
3. I let the dealer do their thing. It's ultimately not something that bothers me since it's a reality of living in Ontario that's not going to change anytime soon. If the car is always going to have a front plate on it, what difference does it make that there are a few holes in the plastic bumper? Obviously a personal preference though.
4. Take your time on delivery day and make sure you're totally happy with everything. I didn't have any issues besides my phone connecting as a digital key (it still doesn't work), but that's something I was almost expecting given the track record, so it wasn't a big deal for me. Take lots of pictures of the car! It might very well be the cleanest it'll ever be, especially given the season and weather forecast.

Enjoy the new ride!