My best advice on Hillary would be to piss her off at every available opportunity.
You can make a lotta campaign commercials with her screaming like a Harpie.
Not bad. I'd never make it as a campaign manager - I'd want to smack her at every opportunity.
And you're right - its a balance of being totally confident and ever vigilant of the infamous Clintonian ability to snake and slither and shroud itself from truth.