I would recommend waiting a little bit more considering that cursde hidan and other ninja are possible to piece together in time. It would prob be more beneficial for you to just go for pure power like refines or other sources.
Thanks everyone for their suggestions,i think i will save my coupons and just w8 for the right moment.In forum someone asked if the pull count in treasures will be reset after 3.0 what do you guys thik about that becuase as i said i am 120 scrolls in already in Jin treasures.