Ben, If you are going to have a limited # of cores maybe consider some short cores that weight can be added to get them deeper. The two and three color are very versatile. Snap weights, Dive Bombs, Rubber Core sinkers are ways to get the short cores deeper. The two and three color cores can also be run off downriggers as a SWR (Secret Weapon Rig). You may also want to consider some copper, as the trend seems to be heading in that direction.