Ok this might sound dumb but my child is 18 months old (about 30 lbs.). She uses a Maclaren Quest. I know the BOB Revolution stroller holds up to 70lbs. I was thinking of buying one but am I crazy? When can a child start walking on their own...when I mean walking I mean going to a zoo or outing without any stroller? ETA: when she outgrows her Maclaren..do I need to buy another stroller. My DD is tall and heavy for her age. Thanks!