Honestly Kakashi isn't that good. Unless you pay the big money to then get Kamui, but even then people can avoid it as seen in the series, and you can't get EMS so you'd still go blind in fights. It leaves you a little restrictive.Minato or Kakashi bio? Which do you guys think is more versatile? FTG always seemed to fun to use.
Minato has a nice arsenal and can use flicker evasion which gives you a nice dodge with ftg too. Plus he gets sage mode too which can be quite cool.
The other option is Tobirama for FTG with his great water skills. I saw your fight with Sasori, seems you like swords and close combat so you can use the lightning sword?