Drive from Seattle to Toronto

I'm thinking about a drive from Seattle to Toronto later in the year.
The great supercharger wasteland of Idaho through Montana looks super slow. Once I hit Rapid City, SD its smooth sailing.
Has anyone heard any noise about permits or site selection for any of those superchargers?
Even a single supercharger or an 80amp HPC somewhere in Montana along I90 would be a huge help.

I'm thinking this:
Day 1: Leave Redmond, full supercharge in Ellensburg, slow charge in Couer d'Alene, stop in Missoula Montana ( 480 miles )
Day 2: Leave Missoula Montana, multiple slow charges ( possibly Bozeman, Billings ) along the way to Sheridan Wy ( 470 miles )
Day 3+: Leave Sheridan, WY with an overnight full charge ( 14-50 ) and its 245 miles to the supercharger Rapid City, SD.
Day N: Last supercharge Maumee, OH and then drive all the way to the western edge of Toronto.

John: If you make a list of RV parks in the Couer d'Alene to Sheridan WY path ( especially for the Missoula and Sheridan overnights ) please let me know.

Chad: I looked at Sun Country, but it looks like there would only have 1 day with no superchargers at all, and even if that day is all 14-50s in RV parks, it's better than a bunch of extra days and extra miles.