NatMed Shopify e commerce site

Hi guys I have a naturopathic clinic and sell around 200 items in the physical store. I want to add on an e commerce site with the following attributes 1. Beautiful graphically - target market is women 35 + with disposable $ 2. Sell digital info and third party eg amazon books 3. Video how to guides 4. Mail chimp / social media 5. Enables me to grow to up to 500 items but pay for this facility as we grow. 6. Mobile friendly 7. Plug into existing word press site. [login to view URL] 8. Customer log in 9. Free downloads available for customers I would like our patients to log in and see their products we have recommended for them to take as well as diet information recommended for them. So when they go to 'my NatMed ' they can easily click on their diet advice and products as well as recommended tutorials. We could also load up their script . Perhaps an easy way to do this would be for us to prepopulate a shopping trolley for the customer so the site could allow us to create cust accounts with only name and email. We then populate the my diet, my prescription , my resources, my shopping trolley, my recommended books . So the site would need to require payment info only at the end. We would also like to sell e vouchers for services. Thanks so much