Soloing a Stearman is an excellent goal, and for most people, more challenging than getting an ATP. The learning curve is steep even for folks who have been weaned in taildraggers. That said, the Stearman is probably the most completely honest flying airplane of the 120 or so types I've had the pleasure to fly. The cockpit is huge, rudder pedals far apart. Controls are all ball-bearing, and fairly responsive...for a lumbering ol' biplane. Can fly around most of the time with a thumb and finger or two on the stick, and feet lightly on the pedals. Like most biplanes, with all those struts and flying wires, it glides like a set of car keys when the power is off. Visability is excellent, except for straight ahead, and as you might imagine, it's quite windy. Some of the aforementioned concerns about brakes in this thread become profoundly important when landing or taxiing a PT-17...sit's got a heavy fuel tank mounted about 8 feet above the mains, and an engine and prop slightly lower, but in front of the mains, so, if one gets a little too urgent with the brakes, you'll do an expensive face-plant. It really holds a mirror up to you - makes a good pilot look, well, not so good as he thought, and a bad one look like an introductory student. If you can fly a Stearman really well, I'd argue you can fly anything.