P,
I don't think you have any idea of how to run a good pump UNDER STRESS, in a kill-or-die situation.
Squirrels & rabbits are not the same thing.
Can you shoot your PGO FAST?
Can you engage multiple targets FAST?
Can you switch distances FAST?
Can you be accurate in a string of slugs FAST?
Can you acquire one or more targets FAST?
Can you reload FAST?
Can you work it reasonably well one-handed?
Have you ever actually worked a building with it?
No to all, I'd say.
Remember in the PM where I suggested you find videos of somebody who knows what they're doing running a realistic course (not just slowfire paper-punching or mugging for a camera or girlfriend) so you can get an idea of what might be involved if you ever need to use your gun?
The suggestion still stands. You may find it an eye-opener as far as believing you're speedy with your PGO goes.
Hunting & casual plinking do not make you either knowledgeable or competent with a defensive shotgun. A good foundation, but....
It's the complete package- Effective ballistics, efficient launch platform, and adequate awareness/personal skills.
You have none of those.
Denis