As fare as Kialoa go..
I'd recommend the Hulu.. oval shaft version..
I mostly use the Hulu Small.. [both downwinding and surfing] .. But it's a pretty small blade.. At your weight I think the regular Hulu will work best..
btw.. It's nice to know that Tom Carroll also chooses the Kialoa Hulu Sm..
Not because they're given to him or because of a sponsorship deal.. but because after trying them all he likes them the most..
I'm sure plenty of others here can give advise re KeNalu..

Both great paddle.. and both have a VERY different feel..