I mean its really hard to sell Single Player Only games these days.
Unless your game is called "Grass Simulator" or "Goat Simulator" you dont stand a chance...
And, I dont think Facebook integration will help, although, there's Farmville and Stormfall...

I'm currently looking for a new (better paid) job, so thats why I'll delay everything.

And another tip:
Google has developed WEBP, a new image format up to 66% smaller than JPEG. It helps in Multiplayer too. The old delta sending, but for bigger things and using prediction. Look it up on Google.

PS.: My game is called The Dreamlord. I've posted it in the Showcase section. Its not much, but its what I could do with $0 budget