You mention that you have only enough points for OKW or AKL and you do not mention where you own. If that means you will need an AKL value room at Jambo (which I am assuming not)and you own elsewhere then be aware that those can be very difficult to get at 7 months out. If, as likely, you are looking at standard (or savanna) view, you will have no problem in August.
OKW has the largest rooms of any of the
DVC resorts. AKV Kidani is second in relation to 1BRs and 2BRs but its studios are not any larger than BWV, SSR, BCV or VWL. Kidani offers the two bathrooms in a 1BR and three in a 2BR. It also has excellent themeing making you feel as if you are in a foreign country on a savanna. It has excellent under building parking, only two resort stops for the buses, a pool with long slide and a children's water play area, and access to good table service restaurants (Sanaa at Kidani and Boma and Jiko at Jambo).
OKW has the largest rooms. I repeat that because they are not just larger, they are huge. If you have a car, parking is also excellent, right at your applicable building. Porches are also larger there. Views from mostly anywhere are good of golf course, woods, streams, a mostly serene atmosphere. You will have some walk to the main pool and restaurant, both of which are fine. Getting to DD is easy via boat. Buses do have multiple stops internally and they 1 and 2BRs don't have the extra bathroom like AKL although they do have the sleeper chair.
Personal preference of the two is AKV for all the reasons I gave above but if you haven't done OKW you might want to try it once. Moreover, I personally would not stay at Kidani unless I has savanna view and thus if all you are looking at is standard that would also weigh a little toward OKW.