Another Multiple Days Trip With Lara - Could Use Some Advice

Second Multiple Days Trip With Lara

In less than 6 days I will be embarking on a 2000km road trip with Lara.
This time we are traveling from West Japan all the way to East Japan,
hoping to catch a glimpse of Mount Fuji on the last leg of the trip and savouring other spots on the way.

As usual I am going all panniers. Top case keeps my off-the-bike sling bag with all personal effects.
The right pannier stores a few changes of clothe and tire repair kit.
The left pannier stores the bike cover, wheel lock, bare basic tool kit and a portable size chain spray.

Navigation is battery-powered so it is concern-free. I am still waiting for my dealer to come back to me on my order of USB power supply. Without that i am afraid smart phone and action camera could be a constant nag in the head.

May I get some advice from the dear readers, what might you prepare yourself and your bike with if you were going on a long trip? The setup above mentioned is the best I could think so, and I am sure that I am no expert.

Please kindly help a novice like me. Thank you! :-)

Cheers.