Fresh chain set and brake pads (keep the old ones at home), lubricate the steering bearings. Hand guards, spare air and oil filter, inner tube mode, check your tool tube (do you have everything for removing front/back wheel or changing oil...), duct tape, zip ties, charging socket... Bike is almost new, basically crash protection. Maybe bead breaker, Heidenau is a real *****.
Good luck and have a fun.
Petre