That's a great roll, grats.
Been playing almost since launch and never missed an event, did most dailies etc..and I still never rolled a new SSR kami since my beginner rolls, so if anyone have doubts of the usefulness of rerolling.. dont hesitate it is well worth it. SSR kamis are the most important and hard to come by material in this game, Eidolons and weapons can be obtained from events and farmed with a bit of patience but not kamis, you could be playing a year and not have one.