To start, the gun isn't all that important.
As long as you can shoot it half decently, it'll do fine.
Pistol shooting of any type is more about skill and technique than equipment.
USPSA and similar competitions require plenty of both, in lots of ways that are not equipment dependent.
Like fast target acquisition, shooting on the move, around walls and doorways, under barricades, fast transitions from target to target, and much more.
So, at least for now, don't sweat the type of gun you have.
Lock the doors, they're coming in the windows.