Hi chris aug18, too bad your not going around the lake, as much as I hate to admit it I find the USA side a much more enjoyable ride with bike lanes most of the way . I have added a link to a website showing a route that follows mostly the Waterfront Trail. I have riden it often. You should consider following the trail from Lawerence Ave. to Oshawa, the route you have picked is not very bicycle friendly and with traffic can be downright dangerous on Bayly St.
You should follow the Waterfront Trail from Cobourg to Colborne, Hwy 2 is not in good shape, can be busy and the trail is faster and more scenic. I live here and I try to avoid this section of highway as there have been several car-bike incidents.
Also from Consecon to Picton follow the Waterfront Trail bike lane on Hwy 33, way better road then CR 1 with lots of scenery and stores. Stop at the Bloomfield Bicycle Company.
http://www.hedney.com/index.htm
Happy touring and enjoy the trip!