What should I do?

I am sitting on something very hot right now. I am half way through writing a biography about an undercover narcotics officer for a major metro police force who happens to be transgender and just went through SRS.

I know I have had some success self publishing, but this is well beyond the scale of God Bless the Child and Unreachable when it comes to importance and marketability. I admit, I might not have what it takes to make this book the success that it should be on its own. I need an agent, but I have no clue how to find one or where to really look.

This book deserves media coverage and talk shows, I can't arrange that. I am looking for advice. Should I self publish and use the little marketing knowledge that I have. Should I sit on it and wait to see if I can get an agent. Should I just hand the work off and let the subject deal with the details after I'm done. So many questions, no answers.