My second plane was a UltraStick... a custom built US120 ( not 120 Ultra) powered by a Saito 180. Extensive use of carbon fiber( prop, landing gear, tail gear, reinforcement, etc.) , lightened and mods like counterbalanced tail. Light aas a stock Ultra 120, but much stronger/prettier. Scary first few times I fired her up ( great sound, power, and fury!!) BUT FLEW SO PERFECTLY that I had great confidence. I have also had a US 40 with a evolution .46 that was a great little plane untill the Earth ate it, and now fly a Jerry's Big Boy (120 size w/ 26cc Brillelli gasser) which is by all acounts, the premier stick ARF ever, at least untill the Jerry Smith Spoiler is released. I'm getting side tracked here but, the stick is a great plane for a second one. The 40 size flys great w/ 2 servos or four. For aerobatics 2 are fine, 4 for crazy stunts, but it would take a long time to exceed the capabilities of the 2 servo wings, so I recommend just 2, for cheapness and lighter wing load. There is no wrong way to set the plane up. I'm talking Ultra stricks, not big stiks, ugly stiks, etc.
Mike