Since your still gun shopping I'll go ahead and weight in. Over the last 17 years of EDC "Every Day Carry", I've packed huge guns and tiny guns, wheel guns and semi autos, guns geared for accuracy and some... not so much.
What I've figured out is that if were talking "concealment"... nothing trumps a "thin" gun so the first "dimension" is a gun under 1" Wide.
The second factor is the height of gun from the bottom of the mag to the top of the slide. Anything 5" or taller tend to print "badly" when worn strong side. 4" to 4.5" compacts are really nice at eliminating this "printing" and many come with extended back up mags... so even through your accepting a 5 to 7 round gun in order to attain these dimensions, you have the option of "higher" capacity b.u.m.'s
I know the "new guy" always "thinks" he needs a 17 round G 17 and 5 back up mags because the day after he get's his permit will be the day he stumbles into an "active shooter" on a rampage and if this is you... don't feel bad... we've all aquired some "really nice" range guns this way.
Any way, that's my .02 cents... Good Luck and be safe.