Congrats on the new puppy.
I've had two pits before and now i own an american bulldog i totally agree on A LOT of training you will enjoy the company of a well behaved dog. As for dog parks i don't see why not if your dog is on leash even if a fight occurred she would be on leash just till you're sure how her temperament is around other dogs or if a fight is close to where she is i did that and it worked just fine with me now i know which dog goes off leash and which doesn't.
Good luck with your new baby and looking forward to seeing pictures of her