[color:"green"] I'm trying for a modular approach. I'm just getting into this and making my first PSK. My goal is to have a tin for fire, general, first-aid and general. There will be some redundancy in each kit along with my EDC. A 6 shell holder will hold 3 tins perfectly when the center stiching is taken out of every set of 2. and is only 4" x 7" overall. This is all still up in the air but seems to be the best route at the time. [/color]