Alright, another canuck eh! :
Welcome aboard. Some answers:Your property sounds fine (wish I had it) Bees will usually forage within a couple of kms.
As far as size goes I would start out with a standard setup, 2 story brood chamber(deep supers) and a couple of medium
supers(6 3/4") for honey. To start out I would buy the components, build your hives and then install bees. This is a great
learning experience. In my opinion this is safer than buying someone else's problem. While I wouldn't put them too close to
a road you also don't want them too far away. Boxes full of honey can get pretty heavy.
Enjoy the experience but a
word of caution, it's addictive