Dec 2018 isn't even open for booking at hotels yet, so I'd shy away from making solid decisions on that yet. And the
points charts ARE out for DVC rentals then, but you can't even book it until January at the earliest.
I would rather stay DVC because of the kitchen, or kitchenette if my points don't stretch far enough for the 1/2 bedroom.
Once you become a more solid member of the Dis community you'll be able to participate in the DVC rental board here, by the way.