It's PvE, mate! You could try almost anything you want ^^ My advice would be to switch your Kakashi for someone else. Sasuke is all the glass canon that Midnight ever needs.
- GNW Kankuro: Turn 1 combo starter and bypass Hinata/Neji/Kimimaro defense. Ignition stops most healers (Unless it's Mabui or Jigokudo). Summon: Shark or Flood Dragon (Shark guarantees Accupunture from Hinata)
- Mabui: 40 chakra each turn. Heal all debuffs. Downside is that her mystery and chase does virtually no damage at all.
- Kabuto: Hinata/Sasuke/Kabuto is the training-wheel lineup for every main. Still does the job, but easily countered. (But you are at midgame now so I wouldn't recommend it)
- Cee: Not recommended because he doesn't chase, but the blinding and shield/buffs clearing come in handy in PvE. Plus his combo rate is pretty decent.
Other than that, you could try the Kimimaro/Guy/Sasuke formation. Or perhaps Kimimaro/Sasuke/Jugo for the curse mark team?