I don't know about realistic, but it seems a bit pointless. When you have that stupid Pitts Grin the we all had when we get in th eearly Pitts fliying sorties, you will not want to go to a 152. After many hours in a Pitts I did some aeros in a "normal" aerobatic type... scared the s*** out of me as I was used to power on demand. Much harder to do well. Those people that can do good aeros in a 152 show imense skill, but why make it hard. A Pitts is like an arial motor bike, point it were you want to go and it goes. Bang for your buck there is no better thing.
Ps I might be a bit biased as I own one.