http://www.horizonpartners.com/users/show/skory
He specializes in brokering technology deals and has done some pretty major deals involving figures well north of what you are looking at now. I bring him up only because I recalled a Mixergy interview he did:
http://mixergy.com/sandy-kory-horizon-interview/
Import thing to know at this point: your focus should now be on a separate negotiation entirely. The one you will be having with a lawyer and/or broker to help make this deal happen.
What you have right now is tremendous leverage. You have a multi-million dollar business deal on the table. And that can get you top priority with lawyers & brokers. You can leverage that not only to get appointments and your phonecalls answered promptly - but you can leverage this to offset perhaps all or most of the up front costs you would typically have to fork out to deal with these professionals. What they'll be looking for however is a significant cut % of the deal so that is what you have to think about next. The ball is in your court. Goodluck.