His highest growth stat is life so if you plan on using him frontline you must get moods +life and you can add more from tactic pages. However he isn't immune to debuffs and doesn't have a dodge so he can be disabled quickly. I plan on using him behind my frontline (Roshi) and get him moods +att since he generates a lot of combos and will do the double standard on round 1.

I plan on doing the following line-up : Lightning Main - Roshi - Anbu Itachi - GNW Neji with Fuku summon. I will be able to get both Itachi's and Roshi's 30 hit chases which both cause ignition. Acupuncture from Neji so i can cancel mysteries with the combo. LM and Itachi will be immune due to LM's talent. And lifesteal also. The only thing I'm missing now is the Fuku summon. But I should get him soon.

Damage wise yes. TenTen is a better option than GNW Neji but the next question is .. where do you place her ? Either her or Anbu Itachi have to be alone in 1 row , because I won't leave my main alone in a row. I have her 2 stars and GNW Neji 3 stars. Also Neji is very tanky and can deflect standards. Something like 1st action Roshi , 2nd action Neji , 3rd Anbu Itachi behind Roshi , 4th action light main behind Neji. I like more balanced and safe line-ups while the one you are suggesting is way more risky. And on round 1 I can cancel somebody's mystery if needed.