We're heading into Sault Ste Marie, Canada, shortly, with the intent to then head east on the Trans-Canada Highway/17E toward Ottawa. (Though we actually want to go all the way to Prince Edward island). Never done this before; I'd like to hear your thoughts, experiences and recommendations regarding this route, and even alternatives, if you don't recommend it for some reason.
Dave, we just came through Hwy 17 to Hwy 1 heading west from Quebec. We did not have any problems and it is beautiful country traveling around the Georgian Bay, Lake Ontario and all the smaller lakes. If you want more information, feel free to pm me. We are currently in Vancouver.
Traveled that road three years ago, no issues. We avoided Montreal and its traffic by staying to the north. Ottawa has a good campground called Ottawa Municipal Campground. Nice place in the trees. You can catch a bus from there into town to see the sites and use bus tours in town which will get you to the museums and such. Visit the war museum if interested.
We spent a few days at the KOA near Quebec city. They have information on the best ways to get into town for the sights. Quebec City old town was a great place to visit. Ask how about the farmers market, it is near old town.
East out of Quebec City we traveled #132 which can be narrow but we like getting off the highways. One can use a combination of 132 and 20.
Buy your fuel before crossing to PEI as the price goes up. If you like staying in a more rural setting we stayed at Vista Bay Golf Course and Chalets, short distance out of Charlottetown. They have RV camping up a hill with awesome views. PEI being small enough that most sights can be seen on day trips from the campground.