Hey Dianne ~
You are already on page 8 of the Canada Forum and well out of view because every post in the country shows up here and pushes a topic along pretty quickly. Not too many people follow the Canada Forum. I am simply being the sweeper!
It would be better if you posted in the British Columbia forum so that we regulars have more chance to see your question.
Link is here: https://www.tripadvisor.com/ShowForum-g15492…
the first item that you will need to sort out is the car rental (car hire). Nobody has reported success in getting a one way rental but for research best to try for Terrace Airport instead of Prince Rupert drop off as that is the Regional Airport for PR. Or even try to see if dropping off in Prince George might work.
If you do not want the big drive between PG and PR Smithers is a good location for breaking up the drive between Prince George and Prince Rupert +it has decent accommodation, relative to all the other communities along the way.