I would amend that. Start with whichever you're fastest (not necessarily most competent) in. Once you discover whether the whole thing is worth the effort, move towards safe languages. That's basically Rust, Scala, or (functional-language-of-your-choice-or-) Haskell.

EDIT: Personally, I would start in something like Haskell or Scala just to do a proof-of-concept without having to worry too much about undefined behavior (C/C++) or absurd verbosity (Java), but then I am pretty familiar with those two languages. Maybe it would be worth learning one or two very terse languages to start with, just in case you hit upon a great idea? (Btw, I think Python or Perl qualifies.)

EDIT#2: As a sort of second or third order bit of advice, I'd encourage anyone to brush up on programming languages that might make you faster. It's a sort of "propellant" and can increase your speed exponentially.