fence-man, I highly recommend stopping in at Ottawa's aviation museum, especially if you'll be going to Trenton to see the Halifax. It's not that far from there, I'm thinking 2.5 hours drive. You'll have a great time either way, but Ottawa's museum is fantastic, and Ottawa is a nice city with a lot of "European" feel to it. It's one of my favorite small cities, and you must see Parliament if you're in Canada. Oh, wait, you've probably seen enough of those type of buildings!
Rich