Here you go, this is what I would suggest for you right now.

Minato's mystery is nice, since it causes interruption and suppresses super armor. It also has a pretty decent combo that follows off of it in this team. Guy is there because he's your only 4 star ninja right now, and he's pretty good in the early game. He will be most helpful to the team due to the life leech he gives when any ninja on the team uses taijutsu damage (all these ninja's mysteries use tai and ninjutsu damage so they will heal whenever they use their mysteries; everyone but Fire main will heal when using their standard and chase attacks). Tenten is there to benefit from Minato's passive that gives life to female ninjas when they do ninjutsu damage, so she will get that healing from her mystery. She also does nicely in combos with this team and increases the critical hit rate. Finally, Fire main is there for round 1 control with his mystery and debuff reflection.

So how this should work in battle: Round 1, use Fire main's mystery on an opposing ninja who you know is going to set up either a barrier (Gaara, Sasuke) or use shields (Earth main, other Fire main users). In Round 2, use Minato on their pos 1 ninja (or whoever they are going to use to attack with turn 2). In Round 3 it's up to you to use either Guy or Tenten, depends on if you wanna interrupt a mystery (use Guy) or do damage to the entire team but not stop any opposing mysteries (use Tenten).

Here's another team you c*e in the future when you've upgraded some of your current ninjas to 3 stars (Sasuke and Kimimaro) and get the ability to change mains.

Lightning main is the main damage dealer, who you're gonna be using in round 2. He also makes himself, Kimimaro, and Sasuke immune to debuffs and buffs their attack (5 rounds) and resistance (2 rounds) which is nice. Kimimaro is a good tank unit, as his defense and resistance increases each time he's hit and he can block 1 standard attack each round. Kabuto is a good support to Sasuke and Kimimaro, and also is the team healer. Sasuke is there to set up his barrier round 1, which will strenghten Lightning main, Kimimaro, and Sasuke himself. This team also has good combos.

How it works in battle: Round 1, use Sasuke's mystery. If you want to use both Sasuke and Kabuto's mystery in round 1, you can switch Lightning main's standard attack to Calm Mind, which will generate 20 extra chakra. Up to you. Round 2, use Lightning main. And then in round 3, use Kimimaro.

Hope this helps, good luck!