I probably wouldn't change a thing if I already had that setup. As others said, carry a few spare spokes just in case, and rotors if you're worried about that. Spreading the load over front and rear will help. I wouldn't bother with the dynohub either. A couple of LED lights like the Planet Bike Superflash blinky and something like the Blaze 2w headlight will work just fine and won't hurt the wallet as much. And since they run on AAA and AA batteries, replacement is not a problem.