I think I might do 2 just to be safe.
I'm aware, sadly. I won't be opening my wallet, but I'll be fine with it as long I can push through most content. For me, one reason I chose Thunder was the playstyle, if you can even call it that on this type of game lol. I mainly chose due to the kami/eidolons themselves though. I went through the JP Wiki looking at each element and just prefer Thunder's selection. I'm also going to work on Fire on the side, and get my other teams strong enough to do at least Expert Advents.