My second glow/gas airplane was a Four Star 60 ARF and I still have it and fly it. I have a Saito 100 installed. It does take 5 servos (two for the ailerons). I have a computer radio so use five channels, but you can fly it with four using a Y harness on the ailerons. With the Saito 100 it builds a bit tail heavy so put the receiver and battery as far forward as possible (my battery is under the gas tank).

Speaking of the gas tank you might want to replace the cap it comes with. The metal tubes are just a bit smaller in diamter than the standard Dubro or what have you brass and it caused a leak for me that was a mess to clean up.

I thinks it is a great airplane and a good step up from a trainer. You can build it just as Sig says and it will be great. If you want a couple of ideas for improvements I would add some contrasting stripes on the bottom of the wing to make orientation easier (I did this) and if I had it all to do over I would replace the tailwheel assembly, although the stock one works okay. I guess a lot of guys have said the landing gear is weak, but to be honest I've had no problems with mine.