The hunt is on... Whick Kukri should I go with?

[Ugly Duck]

So... Recommendations for a 6'2'' 160 pounds skinny fool that's going with a machete for brush, 12'' AK as a light chopper. Need a heavy duty chopper, probably gonna pack it in, not carry it, but I gotta be able to swing it for awhile is all. 18'' AK too big? Ideas anyone?

I almost always use the 16.5" CAK for chopping wood cuz the 20" is just too dang beefy for most of the stuff I do. Used the 20" AK for the first time in a year today to chop through a 9" diameter trunk that had fallen across the trail. That thing is one serious chopper! A real pleasure to use on big stuff... bites so deep when you flick it right. Two-handed it like an axe for a while cuz my back is on strike.