I like
@Nancyg56's comment about booking based on the focus of your trip.
Since your trip sounds like it will be MK/EP centered, I'd focus on the MK monorail resorts... Poly, GF, or CR. I like these options best for splitting time between both parks. Easy to get to MK via monorail or boat (or walking in the case of CR), easy enough to get to Epcot via monorail as well.
Poly would get my vote given walkability to TTC for the Epcot monorail. This makes it easier to hop over to Epcot relatively quickly, as opposed to GF and CR where you have to take the resort monorail to the TTC then transfer (which is perfectly easy to do, just takes longer).
I really, really like Poly CL BTW. It's my favorite of the CLs we've tried.
You say Halloween - does that mean you're planning to go to a party? Leaving the MK late at night after a party, I MUCH prefer being at a MK resort. Quick/easy trip back to your resort/bed!
If I can ask you a question, what about AKL CL did you guys like? The food? Service? Just curious and it may help give some better advice on which CL may suit you best.
Although I'll also caveat, all of the CLs are roughly the same generally speaking. I'd first go with the location/resort that suits your needs and preferences first, then CL is just a bonus on top of that.
Hope that is helpful!