RV Across Canada Halifax-Vancouver

It looks like you are planing a driving trip not a visiting trip, you could easily spend 5 to 6 weeks just visiting the maritimes and quebec , I would suggest you visit only part of canada in one trip and come back to visit the western part of canada just the rockies will take at lease 2 weeks.
I am planing a labrador newfoundland trip and I think it will take 4to 5 weeks.
Gaetan