Sullivan products makes a real nice "flying wire" kit. I built 2 of these planes...See my avatar,,,,..I lost number one due to the rear horizontal stab flutter. I powered mine with a .91 s 4-stroke(Ya think that had something to do with it??). Extra #2(identical to #1) is still going strong after over 2yrs. I've flown the heck out of it....and yes #2 does have the wires(wasn't flying without them. It was easy to build in hard points during construction, and would even be easy to dp a real clean install after building if you just cut some covering away for the hard points. With the .91 though it's absolutely unlimited.
I've not had any nose overs though, not even close with either one. CG is where manufacturer recomends....battery ended up tucked under rear wing mounting area, with reciever in the small bay just in front of the cockpit if memory serves me.
I started with this plane as a tool for moving to larger planes, and it's worked wonders, as Ive had just about every sixe all the way up to 27%scale so far. The GreatPlanes is tried and true though, and en excellent addition to any hanger. Have fun, and good luck.

PS... I have the older version Midewest 27%Extra with flat tail-group....wires are ESSENTIAL on that particular plane, so I definately recomend them on your smaller Extra.....