Exactly my thoughts. If your project gets to a point where the language you've picked for first release is slowing you down you should also be at a point where

Exactly my thoughts. If your project gets to a point where the language you've picked for first release is slowing you down you should also be at a point where you're ready to bring in people smarter than yourself to keep it afloat long term. When you're ready you can build v2 in the hot new language of the month or the old tried and tested, but for now that's not your concern. Walk before you run, crawl before you walk. There's no rush.