The location is great for hour building, up to the north you can fly to Flagler, St. Augustine and the other airport to the north west that I can't remember the name of - US airways do some regional flights into it.
To the south, you have some picturesque views and busier airports (Sanford) to put your skills to the test.
They have a large fleet of aircraft and those doing the hour building packages when I was there had an aircraft to themselves for the entire day.
Yes the aircraft are dated, some in better condition than others. Just make sure you keep your eye on the ball and know your emergency drills inside out.
For hour building, OBA is a good choice.