Best option is probably 1911 .45acp as you can get a 10 round mag with one in the pipe. I had not heard they are counting the one in the chamber yet. I would also advise a good back up gun. I carry a .380 bodyguard by S&W with 6 rounds and an extra mag.
It sucks fooling with people's Glocks, and Berettas, but there is not much we can do short of move, American Revolution part 2, War between the states part 2, or try to vote the bums out, but Delaware is a sick enough society that I doubt the bums supporting these gun laws will get voted out.