Werner Paddles :: Our Paddles :: Whitewater:: Performance Core
for 5'6", this link says 191 for playboating, 194cm for river running. Other variables are blade size, offset (30 degrees is nice), straight or bent shaft, and materials (lighter carbon paddles are more $$).
Demoing and renting boats and paddles is a great way to go. Try an LL Remix too. Try a displacement hull boat like a Jefe or a Nomad (I see a good deal in the classifieds on a Jefe right now, although its in ID).
Buying a boat is not the end of the process of researching, demoing, and trying other boats. Its more like the middle of an ongoing process
. Why have only one boat?