Have you looked into RV rental rates? That trip is going to cost a small fortune.
For Those asking, we've got quotes for the $2500 mark, including unlimited Km's, US travel and the one way charge.
We looked at hiring a car, but when adding accomodation, meals etc etc it, on paper, worked out more than doing the RV route, also the RV means we don't have the pressure of missing accomodation due to weather or what ever.
Something else i've thought about but not chased yet is buying a car in vancouver, we'll need one sooner or later. Spend a week in the vancouver area then drive to Toronto. We have visa's for the US so we may even pop over the border and go that way. We still have 10 months to plan it all.
We're only looking at Toronto as i've got my conversion training lined up with a mob there, but after that i'll go anywhere the work is.