I would stick with the tried and true 18650s; Samsung 30Q or HG LG2, purchased from a reputable vendor, to avoid counterfeits. I like Illumn for batteries.
But you only told us what mods you're using. What tank/atomizer are you using? More than likely, the batteries I mentioned are more than capable of powering your setup safely. Let us know what you're using, though.
As for coils, that too depends on what tank/atomizer you're using. I'm guessing some sort of rebuildable, since you mentioned possibly getting tools. I became too lazy to keep rolling my own coils, so I just buy premade Clapton coils that I can use in my rebuildables. Wotofo brand, I believe. I still have a ton of wire to roll my own if the need arises, though.