It may seem counter-intuitive to put the weight on the front and leave off rear panniers, but the simple fact is that doing so distributes the overall weight much more evenly. Remember YOUR weight is sitting on the back axle and rim. The chances of punctures and broken spokes will be greatly reduced and the bike will handle better too. When I do use rear panniers, they're for the light and bulky stuff, such as sleeping bag, ground pad, etc. And just a side note; I always leave room for a sandwich and two beers.Ha! Cheers!