just a suggestion, you may want to consider having a few spares made for the bike and always keep one in the toolbox, just in case. You mentioned drinks, but to be specific, bring a 24 case of water, the little bottles are nice to have.
Make sure your socket set includes the socket for your rear swing arm (which i possibly an additional socket).
What kind of trouble you expecting bringing a fire extinguisher? yikes
don't really need safety wire unless its a race day, you can, but you don't really "need" it. I would also leave the IR gun at home, they only measure surface temperature. Put the warmers on for 45 min in the morning (assuming their tech shows up on time for once), feel them to make sure they are warm before you go out.
make sure the water is de-ionized/distilled water of course ($2/4L @ CT), tap water will leave deposits.
And don't forget some deoderant and a change of clothes, especially if your riding with someone
And remember, don't over think it, just ride your best.