My advice woud be to have your vet do the initial application and you only add them as they fall off. It'll give you practice.
My friends cat Pookie is a total terror (what orange tabby isn't ) Her vet charges $1 per claw to put the soft paws on and that includes the price of the soft paw. He doesn't charge her anything additional and she doesn't even have to worry about ordering them or anything. She just takes Pookie in, and the tech relaces the missing ones for $1 a piece.

Laura (UA), your sig is hilarious; I about fell off my chair when I saw it.
Thanks!