Combo isn't so important, you also can't make really great teams at such stage of game as you are lacking a lot of ninjas

I would suggest using something simple like Fire Main - Guy - Sasuke - Hinata, that team could accomplish also around 5-6 combos, especially when Sasuke is 3 stars

Although it works better with Lightning Main

Yes, it this team is very good, indeed, I had it before changing my mind, I had a long time ago a lighting main and I used this formation, and I used it a while with fire main, but I want to make something that fits the fire main more, you know what I mean, I also got a pretty good team using Sasori, Kakashi and Guy, but it still looks like it needs to be a bit more smoother, you know what i mean ? Oh and I also had a good team using kimimaro, hinata and guy