Very interesting thread on your jayco build, a lot of similarities to what i've done to my jayco. No bike rack on the rear but I did make a storage box mounted on top of the bumper for various stuff,tarps poles ropes etc. Finishing up on my lithium batt upgrade right now,2 sok 100ah batts, put them in an mostly unused cabinet in the front of the trailer. Ran 4gauge cable back to the upgraded 60amp.converter. The one thing I did different from you was a battery monitor from amazon instead of a volt meter. The monitor was recommend by sok as I now can monitor battery capacity along with amperage draw as well as voltage.