I took another stab at it this morning. I included the originals for comparison. I think the flight envelope is closer to specs, except the aircraft still behaves like a flying brick; unstable and requiring a lot of positive elevator.
One thing I can try is to use the Air Wrench "estimate control surfaces" feature once I input the lingth, wingspan, and wing area. Even if the dimensions are a little off for the control surfaces...if CFS2 accepts them and she flies well, will that be okay with you, even if she is not 100% to specs?