I don't know if you will have enough time to find/order it but there is a book called Cycling the Kettle Valley Railway by Dan & Sandra Langford that covers your whole route. The ISBN is 0-921102-54-2 One thing to note make sure that you have a good light because there is a tunnel to go through and you can't see the light at the end of the tunnel(pun intended), I haven't done the trip but have talked with people that have and they say it a good ride.