I wish I could give you a better idea, but get more of the smaller bolts. Its definitely lacking on flat washers and lock washers. Start with his list and then see how it suites you. How far are you going with your build? I am literally replacing every nut and bolt. Ok almost every nut and bolt. I used a lot of the middle sized and small sized stuff. Things like the side cover, water pump, power steering pump, transfer case, etc. were all replaced, but this kit doesn't cover any of that. Ace hardware also carries a lot of zink plated metric stuff just not JIS. If your going to go to AAA metric anyways I would see if they could put together a whole kit for you. You might save some coin that way. You may have to go get it plated on your own. Not sure what they can get plated. I know a plater who will do your stuff for about 70 bucks. American Plating in Denver. One last thought, if AAA is a far drive for you for you call them first. They might ship.
Cheers,
Brian