Hi Dillian, first off, welcome!
There's all kinds of discussion all over everywhere about 2wd vs 4wd for novices and common consensus is 2wd to start as it's usually cheaper and easier to maintain, not as hard on tires, etc. For sure a great way to get started, and lots of fun. It all depends on your goals too. If you're looking to get out there and win rallies, well unless you're incredibly good you're going to need AWD (and be good too!)
All that said, have a good look at what other people are rallying. It's always nice to have lots of people running the same or similar cars to yours for the simple fact that maybe they have some knowledge or spare parts or whatnot you might need at an event and don't have yourself. Can't say anything bad about Subarus from that respect.
BTW there's no restrictions in Canada about 2wd vs 4wd for novice drivers, just that you have to have done something rally related before you can get your performance rally license.
Oh, and I know I said 2wd is a great way to start, but I'm one of those who started in a turbo Subaru, so...

Oh, and there's a whole other debate that happens a lot about whether to build or buy your first rally car, but that's another long post or three!