I've built about four of them... It's a good plane to build. Enjoy twisting the wing (It's a good lesson in structural strength and stiffness.)

As for different things to do with a PT-40, I repaired one for a buddy of mine. Among its problems was an almost detached tail, so I amputated the tail feathers, leveled everything up, and remounted them true to the plans. We went out to fly the plane and it seemed a little squirrely, so I added a 1/8" shim under the wing trailing edge. That was a wild ride... let me just advise you as a begineer -- DON'T DO THAT!!

Anyway, good luck, enjoy building, and never hesitaste to ask questions. (Maybe people will tell you some of their wild wing twisting stories... when you get to the "Putting wash-out in your wing" part of the building process, I'm sure you'll know what I mean!)