If ya want a chopper get a steel beach cruiser, stretch it, and throw a triple tree on it. I bet a steel hyper would make a KILLER chopper build with a ~4-5" stretch. If you wanna keep the geometry similar you could split the difference and do a 2.5" frame extension and then 2.5" on the rear. If you widen the rear at the same time and throw some 3.5-4" fatbike tires on it would look even cooler...(now I am eying my Hyper lol)
The OCC bikes are kids bikes and it still baffles me why people spend insane amounts of money on them...no way you are comfortable on one if you're over 5'6 lol.