Hi LDM,
I'm not going to do too much. The "must do's" include guns and enhancing the inter-coolers on the wings and I did install a different tail wheel. That's about it for me, last time I went super scale the plane lasted all of 2 flights! That was a "Spektrum" issue, since I've switched to Futaba "FAAST" I've had no radio issues. The plane goes together pretty quickly but be careful with the flap install, it's very easy to get them out of alignment and once the epoxy sets, oh well! I actually think that a minute amount of flaps will make this plane a little more stable.
Happy Flying!
Loopman