Hey....lived in DE since 1993...hunted there since same time...my first gun was a 500...$200.00 is good deal if you are getting all you say and it’s in excellent condition...that 500 will serve you well for ANYTHING you want to hunt from doves to geese and deer to rabbits....get it...but be forewarned...the 500 is the HARDEST recoiling slug thrower I have ever attached to my shoulder....Lightfields shoot very well from it...but try what you want for ammo. As for the attached scope...I have a fixed power 4x32 and it has suited me fine for slug hunting...so if scope is around that power or even variable...you will be fine too as long as its not messed up.
Good luck--
PS PM me for some spots I know on state if you will be going that route--I hunt on leased land now so I will share my secrets.