I would not get rid of 4,9,or 15.Number 4 is a great 5-10 color bait.Number 9is one of are best all around baits fish on core of all sizes and on our deep riggers.If i only had one choice i would keep number 15 we always have one on on evrey trip great 3-10 bait good on mid range riggers and great on wire in the spring 90 to 135 back .Number 15 is our top tournament bait and it catches all 5 of the fish. best for kings and steelhead and works well in the mud on a 3 or 5 color.Also number 1 is great in may on any rod.