If you are set on location, I'd go with the S/D. The only downside is that you wouldn't be able to use Magical Express if you are flying (or the dining plan, if you had planned to.) Still, with 9, a taxi/van to and from the airport shouldn't be too expensive.
If you are flexible about location, I'd suggest renting points at Kidani. It's fewer points than BLT, and (IMO) better theming than OKW. It sleeps 9 (a king in one room, 2 queens in another, a pullout sofa, and a sleeper chair. It also has 3 bathrooms (which you'll only get at BLT or renting 3 separate rooms.) The pool area is great, plus you can use the pool at Jambo, too. The only downside is that AKL is a little further from everything except AK.