I need your help! Please tell me how you would structure my ppc campaign

Hello,
I just started a new job and they put me in charge of managing their google adwords account, however, the previous person who managed it created a mess. I plan on restructuring the entire account and starting from scratch. Would you recommend doing this? If so, and more importantly, how would you structure the account from the campaign, to ad group, to ad, and keyword levels? The website is:
www.zoni.com
Any advice would be amazing.
I need your help! Please tell me how you would structure my ppc campaign

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