It takes a pretty anomalous ridge in place for a high-end hurricane to continue barreling west at that latitude and not recurve, while maintaining that ferocity....theoretically speaking, its very possible....but it takes a unique setup. Just like the south shore with respect to snowfall maxima....while not usually climo favored to get nailed, will get walloped due to OES assist in a cold air mass with an onshore flow.
Yes, FL is vulnerable to extreme hurricanes in a general sense, theoretically speaking, but there are reasons why it is not really a climo hot spot for cat 4's and 5s.