No the Kaos is not a trainer. It is a "go where you point it" airplane and doesn't have the self righting tendencies a good trainer should have. Here's an example of what you'd be looking for. http://www2.towerhobbies.com/cgi-bin...?&I=LXFG19&P=0
That would be my preference, but any plane like that would do. Comes down to which one you like for the price. You do have a nice engine picked out. Go with that and stick it in your second, more aerobatic airplane and you'll have a blast! Good luck.