To double stroller or not to double stroller


my son is currently four months old and we plan on trying for our second and just a couple of months. I have a used stroller but it's kind of a piece of junk so I'm looking for a new one. My hesitation and buying a new stroller is that I feel like we will just be buying a new double stroller in less than a year. so I'm having on recommendations for a double stroller that would work now what's just one child and not look silly. like maybe a convertible single to double or something like that.