If I were in your shoes I would get the the DS version of that bike, but that’s mainly because I hope to buy one myself this year 
One thing I have heard time and time again is that guys who start off riding dirt learn reflexes that will stand them in good stead on the street. On dirt you will ride beyond the limits of your traction and will fall off but hopefully it won’t hurt too much. But you will learn what it feels like to be at the limit and how to control it. Falling off on the street hurts too much to learn that skill but there will come a time when you hit gravel/sand/ice/oil when those reflexes could save you a world of pain.
From the roads around you it sounds like you would have access to places where you could really have some fun on a DS. Compare that to riding down the interstate on a Ninja 650. Honestly, there is nothing more boring than interstate riding. If you could persuade your friends to get into dirt bikes you would that would be a blast. But if not the SF model above would be a great start.
