We're tracking Florence here:
https://www.disboards.com/threads/hurricane-florence-tracking-now-category-4.3705543/
I doubt if you will have any trouble getting BACK on Saturday. The flight down Thursday could be problematic, but it's too early to tell. If you look at the TS force winds map in the linked thread, you'll see that most of NJ is within the range of possible winds strong enough to preclude flights.
Keep watching the storm and your airline's website. If and when flights become unlikely from various airports, the airlines will issue alerts outlining your options. SWA has already issued an alert, but NJ is not covered in that one...yet.