I suppose I'm the wrong person to offer an answer to your capacity question ... so I won't.
I carry a 7+1 capacity .45 ACP pistol everyday as my issued weapon, while performing my normal duties, and I have yet to be concerned about the capacity of the 7-round magazines.
I used to carry higher capacity 9mm and .40 S&W pistols, too.
For that matter, I routinely carry one or another 5-shot S&W J-frame as an off-duty weapon.
I do, however, do a bit of training with all of my weapons.
It's just a handgun.
I tend to emphasize user knowledge and skill above caliber and capacity, but that's just me ...
I do agree with many instructors who feel that lawful carry of 'cocked & locked' 1911-style weapons requires some increased awareness and skill levels of the user.
Luck to you.
Make the best informed choice you can ... for your anticipated needs and circumstances.