1) flatspins MUCH better upside down
2) barely if you are lucky... you do need more engine then that to be happy with this plane.
4) can you do a rolling circle well? even a mildly aerobatic trainer will do a rolling circle in the right hands, that isn't a 3d maneuver.
6) has some serious weak points that need some help, mainly the landing gear mounts. i've had two, and both have had issues with the gear and associated wood ripping out.