you could try to find another
DVC member who owns BCV but wishes they owned BWV instead.
then you could do a property exchange.
it'd essentially be like selling and buying again (real estate transactions), and you'd have 2 sets of closing costs.
but maybe it might cost less to do it that way than to sell your BWV and buy BCV w/ cash.
just an idea... it's pretty difficult to do, especially since you'd have to find someone w/ approx the same # of points + (if it matters) the same Use Year.
btw, i've noticed this common thought among a few DISers. where people wish they could change home resorts.
i myself rushed into buying sight unseen at OKW (a decent contract came up w/ the right #points) instead of waiting to buy at my 1st choice BWV (stayed there before and loved it). then a few months later i regretted that and doubled our points by buying at BWV through Disney. a quick trip to OKW shortly after confirmed that regret. (i did not like OKW as much as i thought i would) now i am faced with the task of getting rid of my OKW. essentially i'm doing the sell one resort to buy at a different resort thing. it is a costly thing to do. a costly mistake to not buy where you want to stay the most.
if you really have your heart set on staying at BCV most of the time, then maybe it's worth the extra effort + cost to "change home resorts".
basically, if you find it
unacceptable that there is a remote possibility there will be a time when it's impossible to book BCV at 7mos, and you'll be "stuck" at BWV every trip.... then make the change.
if you can deal with that possibility, then leave things alone. save your time + money for other things.