RE: Bi-plane as second plane?
It all depends on the pilot. For most people a Bipe isn't a good idea but I had one student that maidened in one day and after a couple weeks could pretty much fly anything. He was my only student I ever had that was like that though, the others took a long time before they were able to fly anything more then a low wing type of trainer. A glider isn't exactly a first plane, even a powered one. You may want to try something like a 60 size Pulse {Horizon} or a 4 Star {SIG} before you jump into a powered Bipe. If you fly at a club of some sort where you are you should try flying a low wing powered plane on a buddy box to see how well you can handle it before you go to the Bipe. The Sim is a big help but nothing really like the real thing, it gets your brain and fingers trained together, it's a help though. Good choice on wanting the Pitts, an Ultimate may be another good choice.