I wouldn't use your points on the Season Ninja Optional Pack IV. The units in there aren't really great (more collection than utility).

Lee [Drunken Fist], Izumo Kamizuki, Mizuki [Curse Mark], Kidomaru [Edo Tensei], Jirobo [Edo Tensei] are all pretty niche. That said, most, if not all, require 3+ stars to have their full kits upgraded.

If you've already got the packs, Izumo Kamizuki is a generalized support while Kidomaru can be a revival based support / position one though not good.

That all said, the official discord has a lot of strategy related help and has quicker responses. https://discord.gg/narutoen