seeking RV driveaway /rental Oregon > New York

you don NOT want to make that drive in a RV unless you're highly experienced in severe winter driving.
and 7-10 days isn't enough time.
we drove from Napa, Calif. to Chicago in November, to pick up our new trailer. we went straight there and back and it took us 5 days. and we nearly crashed in a winter snow/ice storm in Wyoming on the return trip.
if you are leaving the RV back east, then maybe it's doable but it's still a bad time of the year.