This spring we got a 1BR at VB at the 7 month window during spring break. We did a Saturday through Friday trip. If we were able to get this during spring break (March 28 - April 3), I'm pretty certain you will be able to get the dates you mentioned.
We usually go in the first week of May and have not had a problem getting a 1 bedroom at 7 months... That said, we thought the resort was the busiest this year we'd ever seen during that time (May 2-9).