[Hominem]

You are right, I have no idea of the economics and would probably fail quickly.

I wouldn't try to open it not where rich people live or work, but a marginal area that serves as a destination for after work drinks and the like where there is some sort of scene. Someplace like Red Hook in Brooklyn.

Maybe do cross promotion with other local artisans as well.

Really, I don't want to run a restaurant, I just want good sandwiches. I'll stick to supporting good sandwich shops.