I’d start one as soon as possible. Even an audience of 10 people is better than an audience of 0 people.
Secondly, I’d explore more channels rather than Twitter. Reddit, HN, and even Facebook Groups (yep, there are still people using those).
Third, I’d look deep into my network to see if there was anyone that could amplify the message. I’d ask every single friend I have and beg them to share. Even 1 RT could make a difference.