Dining is a bit different in that each stay actually opens at 180 days from check in for the minimum between 10 days or length of stay. Because you have a split stay you will have two dining windows 1 for the stay at Pop and another for the stay at BWV. In the future if you split stay
DVC to DVC MS (if you are an owner) can actually book dining across split stays. But because you are cash and DVC split stay you will have the two windows.
As for FP+ it is length of stay up to a maximum of 14 days (or the length of entire stay, whichever is minimum) at that point your subsequent days open up at the 60 day mark to the day not selected. Split stays as long as continuous are treated as a single stay. There are some caveats to this I believe if you have an AP and off-site stays booked where you are selecting FP+ for during the same time as an on-site stay.