Guess is time we try some paid promotion like signature campaign or getting an ad slot on the forum. The free ads got us this far and for we to get more audience we need better exposure which the above suggestion can get us. In regards to the signature campaign we can organize a campaign that'll focus mainly on certain boards like bitcoin discussion and other technical boards, trading/economy and gambling discussion etc and also the signature code should be a little more direct in the ads it displays. It should state clearly that their donation are needed to finance the project.
Unlike previous campaign this should be more serious and pay interest prompters like regular campaign but in a lower budget (we can discuss what the payout will be), no doubt we'll still have volunteers and in regards to getting a quality manager that won't be a problem since many would be interested in this charity and I'm also available to offer my services (obviously free).