I understand that the cost for a private server is high (around $1,000/yr). But have you thought of putting it out there to the members and see what they think about it? This forum has grown in leaps and bounds, and it's obvious that we've outgrown this server.
It would only take a modest investment from each of us to really cover that cost. The vast majority of people on this forum have been very generous when it's needed.
IMHO, if it cost me $25/yr (and I'm not saying everyone has to put in that much....some may only afford less, while others more), then it's well worth what I get from this forum, and the services you guys provide.
Put some "feelers" out