ff - I haven't flown a Pitts. I don't think the Yak 52, with its 360hp radial engine, VP prop, retractable u/c, cowl flaps (which you have to use!), non-ergonomic cockpit, and considerable power is a particularly easy aeroplane to fly for a new pilot, unlike the much simpler and lower powered Chippy - except in one area - the landing.
The Yak almost lands itself, and you really don't need to be very skilled to do it. The Chippy demands correct technique and rewards the more skillful pilot in the landing phase, without threatening to kill or injure the less skilled pilot.