Gee, I'd think this through.....
As Pam posted, you can't swap. So you can list through a broker or try and do it on your own cheaper.
A broker is going to hit you with a big commission fee. I've never sold, but I understand it is in the 12% range.
SSR is ultimately going to be a big place, bigger than OKW (according to
DVC plans). Unless you are looking at holidays, prime time, or Grand Viillas, the larger resorts are the easiest to get into at 7 months.
Now I imagine that SSR is going to be packed after it opens, but I suspect the novelty will wear off after awhile (JMHO), and that 7 month bookings will not be terribly hard to come by, depending upon the season and the accommodations.
I wouldn't jump to unload your VB points at a depressed price (basis the current resale market), and pay a hefty broker's commission just to own at SSR at this point, unless you are absolutely in love with it.
Good luck with your decision!