My Citabria has a 52" prop, she's good for 100 KIAS. From where I keep the airplane it's about 650 Nautical, more if I go around the lakes. By Oshkosh standards that's nothing, I realize, having seen the guys in modified Long-Ezs from Germany.
Last year I went in a G44 Widgeon: it was the only time I've flown across Lake Michigan at 2500 AGL with the windows open. But hey, you've got two engines, and the airplane is a boat!
Anyway I'd love to make it. Maybe I'll stop at OH02 for a few touch and go's on the grass! My Citabria LOVES grass.