As you're looking for co-founders and/or early hires or consultants, definitely post to the `racket-users` email list (currently also a Google Group), which is the most canonical forum for Racket.
And feel encouraged to email me directly. I might be available then myself, and, if I can get some understanding of your needs, I might also know some other good candidates.
I already received some cool VC funding offers. I'm evaluating them, and planning stuff.
For my use case, Racket is perfect, so it has big chances.