Not necessarily in the scope of the OP’s questions but what about a red dot-sighted AR-style pistol chambered to 9mm (FX9-style) with back-up fold-down peep sight co-witnessed with the red dot and folded down. A stream light w/ switch on dominant side with switch on top of fore end.

Then you have a handier firearm, one in a cartridge less likely to over penetrate, a good primary sight, a backup, and a light.

This is the route I’ve gone in...