Falconers Flight is a fine hop nothing wrong with using a single hop for your brew. Some ppl will use a more common cheaper hop just for bittering you could do that if you want to use more of the FF for later additions.
Falconer's Flight is a blended hop pellet, which means that it's a mix of different hops. It's delicious and completely fine to use in a single hop beer with late whirlpool additions.