That's awesome! I like the Kung Fu 2. I think it was a brave move on their part.
When I got my first new school frame, I did the exact same thing. I threw together a 2011 Hoffman Stowler with whatever parts would fit it. Then, changed stuff as time went on.
Eventually, I figured out what I liked and needed in the new school bike realm and after acquiring all the parts I wanted, I switched frames. But I learned everything I could possibly learn about new school sizing / geometry / parts that way.