I second the notion that it is best to shoot a few different guns. Personally I don’t like the kick on some larger caliber guns and like the sub 40 caliber guns better. Some guns absorb shock better than others, some will leave you feeling like your wrist is about to break after a few rounds. I am a big fellow, can shoot about anything, but comfort counts and that factors into accuracy (which really counts).
Yeah, the combination of a heavy caliber with a light frame is something to avoid, especially for a novice.