Depends on how many scrolls you have, I personally used 120 and got really lucky and got chojuro and mei. Jinchuuriki treasures super rare is a max of 300 scrolls (not confirmed) and my guess is that it may be here 2-3 months from now (based on the pace we are moving at), so I think it is safe to pull atleast 1 or 2 rares. Really depends on how many scrolls you have saved up to this point though. The kage ninja aren't needed, but for the time being are the meta atm. For your team Kazekage Gaara and Killer Bee will benefit you a lot with sage naruto. You team as of now is fine though, if I was you I would 3 star that iruka if you can.