PW: I test flew my 4 with maybe 40 hours in a Super Cub and Citabria (and 100 hours total time). My 4 was easier by far. No time in a Pitts, but they look short coupled to me and with limited visibility. Had a hangar mate for years who flew his Pitts with Goodyear (Goodrich?) drum brakes once or twice a year. He did not die in his plane, but that seemed likely to me at the time. My guess is it is overkill, but if you can fly a Pitts, a 4 would be easy....just my experience and opinion.
