Indie MMO launch marketing campaign

We are a small indie game studio with big plans! Our game has been on Steam Early Access since January 2015, and we are looking to do a release launch on the 1st March 2016. Over the next 6 weeks, we would like to design and execute a release marketing campaign to build a buzz as we launch. We have a small but active user community with several thousand players which we could potentially leverage as part of this campaign. We anticipate that this work would encompass twice daily updates to our Facebook page with relevent in-game screenshots and tip of the day, potentially other forms of online advertising and any other ideas that may assist. We are not marketing gurus so would be looking to you to help us with ideas! The game itself is quite complex and we would expect the Freelancer we work with to spend several hours playing the game to get an understanding of the features, functionality and culture of the game community. We would prefer candidates who have prior experience in marketing computer games, preferably with an understanding of MMO's and their particular challenges. There is the potential for a longer running relationship if the launch campaign is successful - we would prefer to build a partnership and continue with ongoing work rather than just a one off.