If you have the cash, its never bad to book them first. In fact, its good since everything is cheaper when you plan ahead. 8D
I currently don't have the funds, which is why the ticket is my first priority.
Man, I feel so commited to going to see them now. It feels weird that I want to go to New York just for a concert. I should at least spend some time there to go sightseeing. I love getting to know new places. <3