Redesign and Marketing

My website https://www.wellbeing-information.com needs a new look and promotion. This could be one or two separate jobs.

The site is aimed at affiliate marketing in the health and wellness niche.
I would like to retain all the present content but present it in a totally modern way. It is a WordPress site and I am thinking of adding Woo- commerce to aid marketing.

I would like to get SEO ranking. It did have three pages at #1 in Google before Penguin and Panda Most of the SEO work is done but it needs good backlinks.

Working with the developer, I would choose 5-10 pages that would have good affiliate products and concentrate on those.

I am very open to new design and would give a fairly free range to the developer.
Please review the site and to paraphrase JFK, offer what you think you could do for the site, not what it could pay you!