Is this banner worth it?

For context this is the most recent banner available on global server and it rewards you with an EX special amulet where you can summon any uncollected SP/ SSR if you pull 120 times. I really want SP Kinnara which is next banner(but idk when is her date of release) and I have exactly 120 pulls right now. The EX blessed amulet will expire on 25th February according to the terms listed. Do I pull for this banner or wait until SP Kinnara drops and pull for her then? If I get the EX blessed amulet can I save it and use it to get SP Kinnara on the next banner?

Thanks for your advice.