I like the combo idea but I'd go a different way with weights. I'd do a 6 cavity, 3 cavities of each size. One mold would have 1/16oz and 1/8oz and the other mold would have 3/32oz and 3/16oz. I've found 1/16oz and 1/8oz are the most commonly used sizes but there are a number of anglers like myself that like the 3/32oz size. Out of all the cavities on my Midwest Finesse Jig mold, the least used is the 5/32oz which is why I skipped it and went to 3/16oz. The local guys I was making these for that wanted heavier than 1/8oz rather have the 3/16oz so that is how I'd do that, just giving you my 2 cents.