Bulk is the way to go. I have a dedicated freezer for hops that's about full. Make sure you store your hops in the freezer. If you have a food savor, use that to reseal your hops after you use them. I think you'll like this combo if hops. Remember that Columbus and chinook are a stronger flavor of hop than centennial, which in turn is stronger than cascade. If you want to use them all at 0 min or dry hopping together in an IPA (which is great), you may want a 1:1:2:3 or 1:1:1.5:2 type of ration chinook:Columbus:cent:cascade. If equal parts, you won't taste the cascade at all.