We own 150 points...100 at AKV and 50 at HHI.
We use banking and borrowing and use 150 points per year...
...Year 1: No HHI points (already used)...use 100 current and 50 borrowed AKV points...stay at AKV...
...Year 2: Use 50 current and 100 borrowed AKV points and stay at AKV/WDW...bank 50 HHI points...
...Year 3: No AKV points...use 50 banked, 50 current and 50 borrowed points to stay at HHI...
...Lather, rinse, repeat

...
We love the value rooms at AKV so the 11-month window there is a must. Right now, we travel mostly in April (spring break/Easter) and early June. Those are also quickly becoming very popular at HHI so we wanted the 11-month window there as well.
Personally, I would opt to buy at 2 different homes. That way, you will have the 11-month window at 2 properties, even if it is only every other year. I would just make sure that the one's you select are truly the one's you want. When we originally bought in, we loved OKW and plan to stay there in the future. But, we also knew that the value rooms at AKV are scarce, unlike the 1BR's at OKW which are generally very easy to get at 7-months. That sealed our decision to spend the extra money and buy at AKV.
Good luck with your decision

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