SON28 dyno hub and Luxos U headlight has usb charging port. Add in the topline brake plus tailight and yer good to go. Might want to consider internal wiring since you're doing a build. Curious though-You have a 620, and a 720. BOTH are capable tourers. And a Sojourn. Pretty sure the Centurian is tour quality as well. (I had one a couple decades ago, and sorry I sold it). Anyhow, I just finishing a 520 custom build. Had S&S couplers installed, new paint, airbrushed the logos, Ultegra crank and cassette (30 spd), XT rear derailluer, XTR front. Forgot which wheels though. Brooks saddle and bar tape. BioMax drop road bars with Dura Ace bar ends. Can't wait til the snow melts so I can get it on the road! This is my 50th birthday present along with a supported tour across Canada for 10 weeks. Can't wait. Congrats on the new bike bike. Those certainly look beautiful!