We are going in a few weeks with DD who will be 3 & DS who is 9 months. I will have a double stroller & will also bring my peanut shell & use the hip carry. But since you are buying something now, I would reccomend the Ergo. We have one & love it, but I prefer the sling for this trip bcs it's so easy to put on & DS is still little enough that I can keep him on my hip.