First off, I'll say it is awesome that you're planning a cross country ride, I'm very jealous and one day wish to do the same.
From reading this it seems like your only worries are about staying safe while camping and running out of gas and getting stranded.
For the first one I would say that it's extremely unlikely that you'll run into trouble if you're camping in a designated campsite and even then, if someone were to mess with you they would probably only be interested in stealing your bike (which you have taken care of) your money, or any other valuables on you. If you mean just finding some random back-road, pulling off and pitching a tent, I wouldn't do that since you would probably be trespassing and a lot of people don't take to kindly to that. If you're still worried about camping at a real campsite, you may try to exercise your second amendment right for more protection. If you can't/don't want to do that, then it is up to you to decide if the (very small) risk is worth it to you, if not then hotels all the time.
For the second, you seem to have a pretty good handle on planning for gas. I was reading this article earlier today, The OCD rider's guide to planning the perfect motorcycle trip - RevZilla
, and it suggested planning the exact gas station you will stop at and calling them to make sure they have 91+ octane gas and will be open when you plan to get there. Other than carrying an extra bottle like you said you are, as well as having AAA and a cell phone, that's pretty much all I can think of doing.
Also I will say this is just what I though of off the top of my head, I've never been on a long distance, multi day tour so I don't have any real experience to offer. If you're looking for advice from someone who has actually done this, which I wouldn't blame you for, you might want to check out the ADV rider forum or even like a Harley Davidson or Honda Goldwing forum since people on there would probably know more about riding thousands of miles in a week than most sportbike riders.