yea ... the roads are in good condition ... passing lanes ect.
along the St.Lawrence coast there are a number of hills and valleys, and small towns with gas stations, so you should be ok .. however gas prices will be fairly steep due to the locations and the extra taxes Quebec pushes at their residents.
going through the 198 there is a small town half way through ... so gas up there ...i seem to remember that it was the only one on the route ...
a very enjoyable trip with lots of beautiful scenery.
2008 Nissan Frontier 4x4
2011 Rockwood A122