I hesitate to recommend pull/pull systems to anyone who hasn't figured out for himself how he wants to rig them, since I have never seen two systems done the same way--even my own keep evolving. But if I want to get a plane in the air without a lot of fuss, nyrod is the way to go. Only caution is that you should glue (I use goop) the outer tube to fuselage interior or some structure at either end plus every 4" or so, to keep it from flexing on the push-stroke. This should be done before the fuselage is completely covered, while you still have access through bottom and/or top. Get your servos installed and linkage tested before covering. When everything is installed and working, then remove whatever's in the way and do your covering. Try to keep the metal ends on the short side as well, preferably nmt 4". Nyrod is the popular standard, used by lots of fussy builders, no reason why it shouldn't work for you.