If you do separate mirrors, I'd get ones a few inches narrower than the sink base to close the gap of the wall space. I'm not sure pivots come that wide. You'll need a decorative wall object between them. Otherwise I'd do a narrow framed mirror, which is a more modern look than the mirrors that cover every inch of bare wall. With the outlet there, it'll work perfectly.

a tale of two bathrooms · More Info

Rancho Santa Fe Modern Hacienda · More Info

My last master bath remodel I'd initially intended to keep our original full width mirror until we broke it. Oops! Well, ultimately I think it ended up being a blessing in disguise. We put in two pivot mirrors and loved the look. Received many compliments on the mirrors.

One big mirror flat against the wall ... unless you enjoy cleaning behind mirrors.

one big mirror.. makes the space look that much bigger.