I like to work with guns, glass bedding, working on triggers, refinishing stocks, recutting checkering, etc. So, I'm not a novice.
With a CAS 1873, I go with the pro's. Just too many subtle things they do to make a ballanced product that functions like it should. I just don't have enough time to learn all that. With those guns, if you make a change on one thing, it throws something else off. If you're going with a short throw kit, which I would recommend, making it work like it should isn't as easy as one may think.