I would do AKV Jambo, then AKV Kidani, then either SSR or OKW. AKV is terrific because the 2 and 4 year old will enjoy seeing the animals around the resort when you need a break from the parks. I find at least with a little one, I end up spend a lot more time at my resort than someone without little kids. I really like the restaurants at AKV. Sanaa (in Kidani) is sit down, but depending on where you are seated, you can watch animals while you eat. Mara (in Jambo) is QS. Boma (in Jambo is buffet, and while pricey has a huge selection of foods and because it is a buffet there is pretty much no wait once you're seated to eat, and Jiko is fancy and has delicious food. (though it is a little more formal.) AKV (both Jambo and Kidani) have terrific pools and share pools with one another. You can walk between the two resorts or take a shuttle bus. (We like to walk, it's flat and easier with a stroller.) AKV is very convenient to AK Park by bus, which tends to be popular with the little ones.
I'm less fond of OKW because while the rooms are large, unless you're on the 1st floor or a HA room, there are no elevators. I have a lightweight stroller, but having to go up and down 2-3 flights of stairs several times a day carrying DD and the stroller on top of walking around the parks is just not my first choice.