Welcome to the world of reloading Pigirondan! You will never look back! As mentioned above, you are starting at the higher end with those loads. They will be fine in a .357 mag revolver, and probably OK in a +P rated gun, but I wouldn't shoot them in an old vintage Colt Detective Special.
Starting low and working your loads up is great advice from imashooter2. Buy yourself a chronograph if you really want to make yourself crazy! Different combinations of primer types, powder types, bullet styles and weights, brass types, and firearm types will just about make you nuts! You will eventually find some "pet" loads that will be incredibly accurate in your particular guns.
Best of luck, follow the load guides, be safe, and have a blast!
WG840