I'm trying to get my '67 back togehter and running for the NY Sands Point show. Plan to drive from TN in it, visit my sister in Manhattan and hit the show on the weekend. The wife's got an '09 we can take as a fall back vehicle if I'm not ready in time.
I'm going to go to the Des Moines show. I'd also would like to do the Washington D.C show but unlikely.
If I were you, I'd go for the D.C show, then go visit Washington D.C. for a few days. Don't miss the Smithsonian Air & Space museum. Makes you proud to be an American. Also don't miss going to Arlington Nat'l Cemetery.