If you already have retail location(s) selected, you might try first to see if they meet zoning requirements for the intended use.
I believe that your use is allowed in certain zoning and requires a special use permit in certain zoning.
Here's a link to the D.C. zoning department, it may help -
http://dcoz.dcgov.org/
(By the bye - D.C. isn't a state - it's a District - that's why we have 51 chunks of U.S. but only got 50 sates - just a little irrelevence for the record.)
As to Virginia each county/town/city (Fairfax County, City of Alexandria, City of Arlington, etc.) where you may wish to locate usually has it's own individual zoning and business permitting/licensing laws/regulations, so just knowing you're in Virginia doesn't help much in this direction.
Hope something in here helps -
Good luck with your venture,
wtd