I really like Kendra. It sounds like a name of a tree; strong and delicate. I'm not sure about Kerensa. I have never heard about it before, and it sounds eh... exotic. But the meaning is great!
I personally have never liked the name Kendra and when I first read the other name I though it said Krishna... I'm blind, but now that I've read it the correct way, it's just not my style, I like it but I'm not estatic nor would I use it for anything.