Don't know if its really going to be months away. I've got this nagging feeling its going to come out in July or close and around then.

As for your current team, do you have a viable team to play that's doing well? i.e. Some kind of Mei team, or some kind of Danzo team, or some kind of Darui team. If you do and feel comfortable, you can wait for Jinchuriki. If you don't and still want a certain ninja from Rage, then go ahead and continue drawing from it. This is just my personal opinion.

Personally, if I were you, I would carry on drawing from Kage to get myself a barrier ninja for now. Looking at your current team, I'm guessing you might be struggling a little (Just a guess, I may be completely wrong).

How I think about it is this way, do I want to be a collector and have fun squads I can make up with, or do I want to compete. Having 1 strong (not OP, but strong) ninja from Jinchuriki won't do me anything if I don't have enough power to compete.

Stil personal preference for you to decide!

Yeah, then I think go for the Kage Treasure first to at least get 1 or 2 rare(s). Once you have a good team, you can focus all coupons and event points for power items just to keep up in the server population. Hope you get either Mei or Darui! They are dope!