Having just built this kit a couple months ago, I highly recommend reinforcing the vertical stab with tri-stock. The instructions show it as an option, which I initially chose to ignore. After dropping a sleeping bag on my plane (doh!!!!), and breaking off the stab (clean break), I went back and installed the tri-stock braces and the thing is rock-solid now. I just cut back the covering, epoxied on the tri stock, and re-covered. It took about 15 minutes.

I also installed a tail wheel bracket, because I though the stock method of just hanging the wheel off the rudder looked a little flimsy.

Enjoying your build, keep those pictures coming.