Since more and more events are requiring more than just a 5-card, I would suggest for you to invest in more cards. However, I'm not too certain where you should start. With the amount of HP you have to could either get about 2-3 FF Legend cards, or a wide-range of FF SSR cards. Though, you could just meet somewhere in the middle also.
If a wizard turns me into Dawn then I would sooo touch myself every single night. ~ SoulGainDestiny