Take heart: if it was lawful to send Heady Topper (or Pliny or Dreadnaught) across state lines, there'd be no market for your service anyways; there is so much demand for those beers even in their home markets that the interstate distribution problem would be saturated with offerings.
(If you're wondering, most people get their out-of-state beers by 1:1 exchanges. There's probably a market for solutions that make those swaps easier!)
The matchmaking problem for 1:1 beer exchanges probably doesn't have a whole lot of legal risk attached; the shippers should bear the legal risk (they're breaking the law, but in a jaywalking sort of way until they try to make money at it).
(If you're wondering, most people get their out-of-state beers by 1:1 exchanges. There's probably a market for solutions that make those swaps easier!)