Welcome to the "smaller side of the rainbow"!
That loose curtain with Velcro is the privacy curtain for your windshield. (You'll probably find a couple more for the side windows.)
Can you store the Slinky in your dump bay? That's where I hid mine. Put a cap on one end of it, and collapse it down as short as possible. Then you cap the open end.
No ladder? No problem! Just don't plan on carrying anything outside your new rig!
You could probably put a bicycle rack up front...