If you really like the size and weight of the G19 then get the P2000 or USPC. That's the pistol that you can compare in both size and weight. P30 and VP9 are going to be slightly bigger. If you decide to get the SK then slap an extended mag, you might as well carry the P2000.
All of this is subjective experience to one's physical size, as you know trying it will filter any doubt you might have. Good luck.