The con of rooting is there is no support except what folk will give you. I can't support such because it's unsupportable. And better than half the time the person asking DEMANDS support. Odd, I have never done this for a client so why the demand.

Try more research and consider that new Nexus 7 when it comes out. At home we have the KF HD 7 and it seems to do what it does pretty well. For a more Android experience you would not get the Kindle.
Bob