Since you think AKL looks really cool, why not consider it as well? As far as room size, it's the same square feet as WL.
Keep in mind AKL is like 2 resorts in one, Kidani village and Jambo house. You can explore both resorts and use both pools, which I would think your boys would have a blast over at Kidani's water play area. There are numerous kid's activities planned throughout the day, 3 sit-down restaurants and one CS restaurant, plus the animals! I would think you would have a fantastic experience if you stayed at AKL.
I never really get the "distance thing", you are maybe 15-20 minutes at most to MK, it will take you just as much time to get to AK or DHS from WL, maybe longer since WL will share it's bus with other monorail resorts.
I have never stayed or visited CSR, so I cannot comment on it. I have never stayed at WL, but have visited and dined there a few times, I can say it's a beautiful resort, and I would think you would have a great time there as well.