I can't help you on the Global Entry thing.

MANY travelers would be happy to get home "about 10:30" or so. When I travel to SXM I usually land at my home airport close to midnight. Friends I travel with land at the same time and have close to a 2 hour drive. No other option and I am just glad to be home safe. I would take a 10:30 arrival (going through Philly) over having to possibly overnight (at your OWN expense) in Charlotte. If you miss your connection and it is not due to mechanical problems, it is all your financial responsibility from that point forward.

You may just have to be a little more flexible and go with the Philly routing.