Just FYI, Sage Jiraiya may seem flashy but he's pretty difficult to use because of how squishy he is. If you enjoy Playing into the Lucky board for all the other rewards you'll slowly get him, he's always in it. Danzo is probably the best pick out of the ninjas for the cost, if you don't think you're gonna push a bunch of seals into Kage treasure I would definitely get Danzo over Jiraiya here.