Serendipity?

I have just finished my third rewrite of the"Bucket of melted pig's fat," one of my latest stories about an escape from a concentration camp in Serbia. It's not only about the escape, it's about rural Serbia, and love, and hunger, and war.
So, now, I can leave it be this way, I can send it out, or I can wait a bit and try to deepen it even further, but adding more scenes, chapters...So, I can really use another life-time. If anyone knows where I can buy one, please, do tell.
In a meanwhile, I had a bizarre occurrence the other day. I have received mail for a literary agent nearby.
I thought, if that is not serendipitous, I don't know what is. And I don't even really (maybe) believe in serendipity.
But, I decided to go there and deliver her mail, and tell her that I am a writer.
And I did.
Bad news: she represents only non-fiction. Or at least that what she told me.
Good news: she referred me to a NYC agent. Well, not really referred me, but told me of an agent with Slavic roots who might be interested in my writing.
And now I just need a steel-clad query letter. And heaps of luck!
As you can probably guess, I didn't gather the courage to write him yet. As thick skinned as I'm trying to be, rejection hurts.
There are also a few other outlets, open calls for book manuscripts I should really send mine to. I'm just waiting for the literary Godot, or to perfect my book, before I do so.
I need serious time and schedule to update my manuscript after all the feedback that I recently got. Recently, meaning, since January.
So, I really need another challenge. I need to challenge myself to rewrite my manuscript asap. But how much time should I give myself? These calls, they have no deadline! Or do they....?
I also have a friend, who knows Tea Obreht's agent, and who offered to refer me to him. Scary, right? Very. I'm not ready for that. But when will I be?
O.K. The Challenge starts on Monday! I just need a deadline. I'll find one today, and get back to you.
Why Monday? Well, I'm busy this weekend...