Enjoy your new home!
As I know that lots of canadians don't care 房屋朝向 at all. When we bought our first house 8 years ago, we bought a east-west(door facing east). Our next door neighbour chose lot before us, but they chose the lot which is exactly you have now. I asked them late if they satisfy with their house orientation, they said there is nothing wrong with that. If I wouldn't ask this question, they even didn't think it is a problem for someone. Since there is air conditioning in Summer and heating in Winter.