The biggest thing you (the collective "you") can do to kickstart Caldari RP is to do things out in space. Obviously, I'm trying a new approach with Faded Light, and you have the traditional FacWar loyalist corps and organizations out there. Apart from I-RED, in whatever state it's currently in, and the Heiian Conglomerate, I'm not really sure what other groups there are out there that serve to draw people interested in Caldari RP into their fold. Arataka, perhaps? Depends on whether Makoto and co. view it more as a Caldari or multinational group, I guess.
To that end, engage with each other on the forums, in-game, and try to bring fresh blood into the fold. Don't be an asshole to the new people, don't hit them with a wall of lore and tell them to "memorize it by Saturday"... just be flexible, make RP fun for them, and do things in space. Do this, and I'll bet that good things will come from it.
As an aside, I've been quite enjoying the thread on the IGS for Faded Light, at least until the last page or so. There was genuinely interesting back-and-forth between people on different sides, assumptions challenged, and all that. Good stuff.