A lot of people will be willing to sit down and look at your book even though the agency isn't hiring. That shouldn't discourage you from meeting with them. You get feedback, facetime, and a connection. That could make a huge difference down the road.
When you go to an agency to meet with someone (unless you've been brought in by their invitation) don't refrain from asking for additional contacts - even outside the agency. This isn't insulting. We all understand how difficult landing a job can be and most of us are eager to help. Simply ask, "Is there anyone else in town you can recommend I meet with?" I've never turned anyone down on this and would be surprised if anyone else did.