In the past the cutoff point between pass and park hopper was 5 or 7 days with fl residents discount
IMO annual pass (or seasonal pass if you can get it for your dates, which would be much cheaper than a park hopper but you'd have to pay for the extras ie disney quest, cirque etc) would be a better buy and you can go back again and stay offsite and have a really cheap vacation just a fleabag motel and meals...ahh memories of my own childhood (j/k)
Go with the AP, you get good (not real world good, disney good) discounts and acess to a special lounge in body wars