Well, I really don't need to be that intense about weight reduction on this type of model. It is just for nostalgia's sake that I am building it. The wood in the Blackhawk kit was pretty darn good, and I did hollow out the fuselage after shaving the outside thinner. It will be good enough to do all the basic stunts, I am sure. If I want more performance, I have several full-stunt .049 and .061 models in my "hangar".
Thanks to the generosity of several people, I now have plans to the Cutlass and F-51 Mustang. I would love to get the Stuka and Me-109 original plans too. Back in "the day" I never built these kits, as I always wanted more stunt performance, and knew enough to realize that light weight, lots of area, and a good airfoil were required. I actually designed most of my own models even then. I still looked longingly at the Scientific ads, as the models looked so good in the photos (drawings?) So many nifty designs, so little time and money..... Now, I can occasionally tackle a project like this, maybe one a year, and do it right. Plus, I no longer am likely to crash a simple model, and know how to build and finish them so they don't get oil soaked or have parts just fall off (like engines!).
The Golden Hawk is the second I have built, the first being an American Boy. I think the Cutlass will be next as it is one of my favorite aircraft.