i have always been told, at both writing conferences and clases, that a piece of non-fiction is understood not to be a finished piece yet.
oh, well, i have the chapters and will kick out my outline asap.
I don't even write NF, and I've heard that too. It sounds like your query/proposal/platform is defined enough to warrant a request. The only thing you need is the outline, right? Doesn't sound like you're too far away from having what was requested. I agree with maryl, sounds cool. I also agree that it should be sent as soon as possible, but I don't think this is freak-worthy. It's not like the agent is going "Where is
that NF personal travel essay?? Freak, I have nothing else to do!"