As you are in Canada the woods available to you locally may not be the same as we can buy in the UK. If your local wood yard is suggesting pine I would follow their advice regarding the similar properties to spruce.
As Muskrat says you can cut halfway through a stringer in several places where it needs to bend to fit the hull.
I have used many types of wood building from scratch and whilst there are some parts that require special woods (Keel etc) the choice is often what is available. Models of all sorts are best built light and we all tend to overengineer our models just to be on the safe side. Very oily woods can be difficult to glue so are best avoided except perhaps for detailing work.
The best way to learn is to experiment with scraps of wood until you can get the feel for what is best for your purpose.