just going from my H7 experiances
the engine mounts on the ofnas are a PIA, but once its on there its a decent desine...
if you don't whant to spend the $$ on a starter box, get this(idk if the stock header will fit...)
http://www3.towerhobbies.com/cgi-bin...&I=LXJMG7&P=SM
http://www3.towerhobbies.com/cgi-bin...&I=LXGFK4&P=SM
if your still using the allen wrenches, get these...
http://www3.towerhobbies.com/cgi-bin...?&I=LXPZS7&P=7
or any kit that has a 1.5 2 and 2mm
I beat the $#!t out of my H7 and i did brake parts, and stuff broke or ended my day early, but stick with it for a few months and all of the bugs will get worked out