Hey,
Deland airport is just outside the class B (i think ?!?!) airspace from daytona. It's about a fiveteen minute flight. SO if you fly anywhere except to the West you need to stay below it until you clear the airspace.
As for what to look out for; don't be surprised when you are on the downwind to see a huge skydive plane flying towards you at 500ft! And generally, look out for the skydivers!
One of my ex flying intructors, Steve, went there from my school in Ormond Beach, and from what I could here, it sounded like a good set up.
Its a busy airport with lots going on; you got the skydive, numerous schools and private charters.
I would recommend you go to Meritt Island (amazing approach!) and Melbourne. Not sure what your flying, but if you have the range, visit Fernandina Beach in the North, and off to the West you have Ocala, and John Travoltas house, so give him a buzz ant 500agl :-)
Hope you have a good time :-)
Alex