It’s going to be great. Don’t worry. Get the copper tabs from http://18650.lt/index.php/product/n-e-s-e-tab-set/… It will take 2 weeks or so to reach, you can have the cases ready by then. It would be economical to buy other hardware from mcmaster.com if you are from the USA.
The copper tabs are a good idea! Thanks for letting me know about mcmasters. I am north of the border but will check it out for hard to find parts, looks like a great place for hardware.