Yes, your logic is sound. A .357 revolver is a great choice. If it is going to just be in your home in a safe or drawer, I would not worry about the hammer-less version. I would also make sure to get a decently long barrel. If you are not going to conceal it, the longer barrel will do two things; make it more accurate, and make it heavier meaning it will have less kick.
I used to have a .357 Ruger SP101. It was great except that it was a snub-nose. I couldn't' shoot very accurately with it at all and I am a qualified navy sharpshooter on the pistol.
"Be a listener only, keep within yourself, and endeavor to establish with yourself the habit of silence, especially on politics." -Thomas Jefferson