My train is stuck

I was stuck this weekend. I had finished the first revision of my novel. Had printed off chapter one to review for an upcoming contest, and was ready to start my new project. I had my genre picked out (sci fi), my target word count; I even had previously written the first 3200 words... But when it came time for me to write the outline and synopsis, my train came to a screeching halt. I came upon an impenetrable question:so what? The novel is about a female space cadet who gets to realize her dream, in a way she didn't expect. She encounters danger along the way...but? I don't have any real reason for anyone to want to read about her life, no great conflict or life challenge for her to overcome. Her train is stalled behind an avalanche of boulders. It's ok. The novel I just completed- the main characters stayed at their kitchen table for six months before the real story became alive and I could resume writing it. So instead of giving into frustration (too late). I'm going to move on to another project. Here is where it gets tricky. I just found out there is a young adult novel contest open from Oct to Dec 31st. The only catch is that it has to be set in contemporary mode. Meaning no knights, no spaceships. Can I write it? Yes, but I already know my passion is for sci fi and young adult fantasy. But...I do have some ideas for contemporary YA fiction. I could write one of those. And being blessed with being able to type 80 words a minute. It is quite doable. The other side of the coin if I were to flip one would be to write a sci fi script. The perfect idea came to me over the course of the 3 day weekend. That I could have done in a month and with another month for editing, it could feasibly be ready for submission by November. Oh what to do? I could conceivably write both simultaneously: alternate days of fiction for days of screenwrting. But I have a feeling that train leads to madness. Best stick to one writing project at a time. But which one?
Guess I better go put the pot of coffee on. I know me. Once I make my decision tonight, I'm gonna want to write for at least four hours straight. Stay tuned to see what my next project is.