If you like your 26, keep it and buy either the Glock 12 round mags or a couple G19 mags. I have both and I almost always grab the 26 with 12 round mag for concealed carry, with a spare G19 mag in a pocket.
As for the LCP, I'm at a loss for the love of that gun. I'd choose the LC9 if I wanted a BUG/pocket gun.
I carry IWB in a Crossbreed supertuck, fits both great.
Just my $0.02
"Courage is being scared to death and saddling up anyway."
-- John Wayne
"The wolf cares not, how many the sheep be." Plato