I just wanted to ask for some advise on how I should approach multi-day loaded touring, as I am just starting to get into it. I have a 2007 Trek 520 that I bought new a couple of years ago. I have used it mainly for commuting and have ridden a century before with it. It is still in stock condition, although I switched out the seat first thing. It still have the Trek Interchange rear rack, which has served well for commuting duty. I have a pair of Deuter Rack Pack Uni's for panniers.
I should also explain that I am a very competent ultralite backpacker. My load out for a week long trip is around 15 lbs in just gear, which includes all the essentials for camping. I never reach 30 lbs of weight with food and water on a backpacking trip.
So my question is how should I best carry a load for a long tour. I definitely want to get a new rack, but I don't know if I need the most bomber rack for the loads I'll be carrying. Also, should I split the weight between front and rear racks, or can I stick with using just a rear or just a front? Maybe getting a nice front rack to hold my panniers and keeping the stock rear for sleeping bag/tent?