Double stroller vs wagon with car seat attachment

Due with baby #2 in February and my daughter will be a little over 2 by then. I still have her graco stroller and car seat travel system that I loved and I recently bought a double jogging stroller at a yard sale for a good price. So I'm trying to decide if a double stroller is worth thr buy for the first few months before baby can sit up on their own or go with a wagon that has a car seat attachment since I have the jogging stroller already for next summer! Thoughts?