I like it. I think I'd be good for the first two but not the last one - don't cache in the states enough.
There are the Delorme Challenges for most states which I've admired from afar and for quite a while now I've had an inkling to set up a challenge that conforms to the grid lines on the official MTO Ontario maps (the one with the south and north on opposite sides). Maybe I should get acting on that. Do they still publish those maps?