I’ve been to all of those except congaree and if I had to go back to one I’d do isle Royale. Great for introductory backpacking with it’s low elevation change and pit toilets at all camping areas. More modern toilets at either end of the island. You also can kayak to one of the the surrounding islands and camp there. If that’s not your thing there’s a hotel, restaurant, and boat tours of all the shipwrecks. I’m a big backpacker though so if I went back it’d be kayaking and camping on the chain if Islands around one end of the island. Lots of more family friendly options near rock harbor too. Like others have said you can visit lots of things in the way up to break up the trip. I’d do a day at pictured rocks, tahquamenon falls, kitch-iti-kipi, or even a couple nights on mackinac Island on the way up.
Oh man our security team is trialing zscaler and netskope right now. I’ve been sitting in the meetings and it seems like it’s just cloud based global protect. GP was really solid so this worries me