It's understandable you have a dream agent, many agents have dream authors. But don't advertise on your blog who exactly your dream agent is. If I get a submission, go to check you out, and discover that Agent X is really your dream agent, why should I waste my time reading? I have a lot of respect for Agent X. She's fabulous. But if I offer and she offers, you've already made it abundantly clear you're signing with her, or are signing with me only because she already rejected you.
Thanks, but no thanks. I think I'll pass and find the author who thinks Agent Jessica is her dream agent.