1. Suggest you switch to mountain shoes as well. Starting and stopping you will have to support the weight of the bike and the seated stoker. Road shoes will slip on the pavement easier than mountain shoes. (Not everyone agrees.)
2. If you frame is on the large size you may need wider bars on front. Width should be the same as your shoulder joints. For some reason Cannondale puts the same size bar on all sizes.
3. If a large frame the stoker stem is probably too short. Call Mell at Tandems East for a perfect replacement stem that is longer and more adjustable.
4. We added Specialized Bar Fat under the handlebar tape and really like the cushioning it gives. Other companies make similar product.
5. We really like the Specialized bike computer we added as it has numbers large enough to see by my aging eyes.
6. We added a rack and use it a lot. Small seat pack has the tools and patch kit.
7. We added a Minoura bottle mount to the stoker stem so that we can carry 4 water bottles.
8. We switched the stock Gatorskins for Conti 4 Seasons. Frankly the Gatorskins were fine. 4 seasons a bit faster.

The 'Dale is a great bike. You will really enjoy it.