I see some people use Oak, Poplar, and Pine.
Does it really make a difference? I can see at places where I will be attaching things latter i.e.: hinges, lights, which it would be better to use
a hardwood.
Awhile back I made a project out of select white pine, knot free stuff
and it turned out really nice.

I plan on biscuits or pocket screws and epoxy or polyurethane glue at all joints.
Thanks
Don