To be honest, Chiriku is a great supporting ninja in general. I find your lineups really okay and every different formation works. As long as you enjoy and have fun with the teams, thats‘s really all that matters

Iruka is really a super good buffer. It works awesome definitely and sometimes it is better against some teams. However, Chiriku can as well be as much helpful with his defensive buffs. If you would like to play full burst, Iruka is definitely the better option.