You may want to purchase a media list to get more chances at press. Services like Meltwater (which is subscription based) allow you to search via keywords and gives you the ability to export the direct email and phone numbers of these individuals. Would be happy to export you a couple of media lists if you are interested at a very reasonable rate.

Additionally, twitter strategies for crowdfunding work very well. This video we did might help you further: https://www.youtube.com/watch?v=jBGypRKBUD8

Are you doing email marketing? http://intercom.io is a great service to get to the inbox and bypass the promotions folder of gmail. Hope this helps!