DS is 4 1/2 and 44" tall, 48 lbs. We used our First Years Ignite for our previous trips to WDW but in January, we realized he had just gotten too tall for it. I am planning on getting him used to walking longer distances before we leave, but our family tends to walk 11-16 miles a day in the parks, even with midday breaks, and we will be there the first week of July, so I am looking at possibly renting one from a third party. Has anyone used a City Mini for a kid this size? Is the Bob an option?