I received the SR card Chise Hosokawa from a silver reward. The particulars in regards to time and used items I do not recall exactly, but I think the time taken was 90 minutes or less. I tended to give up to one peronamin and one pero pudding, though (when I had them), along with 1-3 candy and once or twice I threw in an R wild card 1. So on that chart the max I could have given would have been ~1216?