I thought you said that you got few ideas for promotions? Bear in mind that every new sites that pop up here got almost zero interest to some players and zero chance to survive if no promotions is running. You must run a heavy promotions for your site.
Some promotions that you can make
1. 100 % deposit bonus with X amount of wagering
2. No deposit bonus code for players to try out the site
3. Sharing and tweeting about this game in social media to get some X number of free clicks
4. Highest wagering competition for X prize of
BTCand this perhaps
I've had signature campaign in mind
Due note that if you cant offer competitive rate for signature campaign than this will be a very bad move to make
We have something in mind for a new feature, will update when done.