I went through the same thing just a few months ago. I bought in through resale thinking I didn't want and/or need as many points at BLT and would be happy doing a few nights at VWL and the rest at BLT.
But, after just a few months, I realized I just really wanted to book my entire yearly trip at BLT 11 months out and didn't want to have to "hope" that BLT was available for those extra nights 7 months out.
So, 2 months after I bought it, I sold my VWL contract. It was small (50) so it went quick and we close as soon as we get back from our August trip. I did take a small loss, but it was worth it. I re-bought those same points at BLT and am really happy that I did.
I would weigh all your options and see how much you would lose. In the long run, it might not be that bad.
Good luck!