I have a Breezer Uptown Infinity that has a Yepp Mini hooked up to the front, and a Trail-a-Bike hooked up to the back. I carry my 1.5 year old daughter in the Yepp and my 4 year old son rides the Trail-a-Bike. I have a rack and paniers that I use to haul groceries/library books/whatever.
I always feel like I am going SUPER slow. I average 7-8 mph fairly comfortably with this setup. Is that normal? Is it me and my ability, or is it just that I'm hauling a LOT of stuff on my bike?