Hi "da Rock"
I did actually use the calculator at geistware at the early beginning, that together with (probably) hundreds of pics of different ARF´s to get a "feel" for what´s in use.
The British used the old "if it look right, it will probably fly right" principle and I tried the same (but with a little help from various software/calculators) .

Things did however change during the build, I decided to use ailerons that I had and those added some slight chord.
I also messed up the stabilator slightly (the control surface, not the mechanics) and that added some unwanted weight that forced me to move the wings slightly aft.

I don´t have any hopes for that I have found the final solution for all planes, I just want it to fly right now and then I can use what I've learned for the next plane (what ever that will be).

One thing is for sure, the more I learn the more ideas I want to try. This is a great hobby!