One thing you left out, CABLES:
As you can see from my selections, ALOT of InWall/Custom/All Home Audio. This is a trend that is doing NOTHING but picking up quickly. VERY quickly.
And I would have a big ass leather sofa with a Mr Coffee machine, fake plants, magazines, and credit applications, oh and a bunch of Bose Speakers arranged in a circle glued to the wall to throw darts at!
Good luck opening your store (dream big lol)