Getting lake view at 7 months out is essentially a certainty at that time of year even when it is one of the Easter weeks, which it is not next year. You also have a decent chance for theme park view.
I'm hoping to switch from BCV to BLT 2BR the same week. I won't be heartbroken if we can't but we'd love the 3rd bathroom and the nostalgia of being on Bay Lake. We're taking my brother and his family. It will be his wife and kids first visit and his first visit since we were kids back in the 80's.