I have 4 lo's aged from 4 to 3 months. We usually walk my dd to school and then go for a walk around the park. I only have a double buggy at the moment and I end up having to carry my 2yo as well as pushing the buggy. However every triple buggy I look at doesn't seem like it would be able to fit a newborn, 16 month old and 2yo. Do you have any recommendations?.