I have done a lot of mods on my CZ pistols, with parts from CGW. CGW and David are great to work with. If I had to choose the absolute minimum mods, my favorite mod would be their Race Hammer. This is for single action trigger pull, which is what you mostly shoot. It is a major change, but may be difficult to do yourself. If I was sending my gun or gun frame to CGW, this would definitely be included. Probably I would also get a new trigger spring and trigger spring retaining pin installed also, since they are cheap and the hammer has to be removed to access them so they are easy to install during the process of removing and replacing the hammer.