Are vacation club points given priority over weeks when exchanging?
In II, some weeks with lower trading power won't be able to see some others with way higher trading power. Points can pretty much see everything, you'll just then need to actually have enough points to complete the booking.
As a caveat, I see you own an MVC property. With Abound points you can only book in Abound for properties that participate in that system (Marriott/Westin/Sheration, etc.). You can only book non-Abound properties (Hyatt, Disney, etc) in II using Abound points. With MVC weeks, you can still exchange for Abound properties in II, subject to the trading power limitations.