First time I took Magical Express (to the BWI), it took well over two hours from when we landed until we got there.
Arriving that late, I'd want to retrieve my own luggage, so that can take another 30 minutes. I say that because it can take 3-4 hours for them to get it to you with Magical Express, so it could very well be after midnight by then.
Then you may wait a while for the bus, then it's a roughly 40 minute drive. I'd check in, and want to get settled into the room. So you're talking pretty late by then.
I'd save Disney Springs for another day and just get dinner elsewhere. If it ends up being very late, Picabu at the Dolphin (a five minute walk from the BC) is open 24 hours.