Deal,
We use equipment appropiate to the value and cost of the model. In a model such as this, digital and high quality servos are a wise choice. If you don't find the SFG's in your kit, let me know.
I think that the Katana wasn't given much kit production and fanfare as the other areo models because there really aren't many scale ones being flown. I found only one picture of the real one. It seemed like a one-off experiment.
I use Futaba becuase that's my radio brand for years and I'm comfortable with it.
Keep us posted on your progress, as I'm still putting together my newest Extra 300 from Aeroworks, who just recently closed their doors. Talk about having something that is discontinued!
Karl