Chris, in looking at your route your planning I will give you a couple tips for the part of Ontario where I live.
Considering you are taking the #1 hwy from Calgary to Winnipeg realize there is also a road from Edmonton to Winnipeg and I think both are 4 laners almost full route. East of Winnipeg both funnel onto only one hwy and then when you get east of Winnipeg this all goes onto a "two lane" road just before you get into Ontario in the Kenora area. Its over 8 hrs to Thunder Bay on this hwy (#17) and the traffic is HEAVY.
Much more scenic and relaxed driving is to (about 15-20 kms just east of Kenora) take #71 south through Sioux Narrows, Nestor Falls, then #11 East through Fort Frances which joins back to #17 just before Thunder Bay.
Only about an extra hour driving but MUCH more enjoyable.
Then once east of Thunder Bay the hwy splits again to the northern hwy you plan to use but the southern hwy follows lake Superior and is way more scenic and pleasant drive. Much more hills and turns but because of that most of the heavy trucks take the northern hwy.
If you decide to take #71 south of Kenora as I mentioned send me a PM and will give you some more info. Our seasonal site is there just south of Nestor falls.
Have a super trip.