Build an Online Store

I am looking to have a website created that acts as an online gallery and an online store for my abstract art canvases, archival prints, posters, and various limited edition clothing and printed items. I would like to have the ability to continually upload new paintings to the gallery as well as edit and modify the printed items that are available. The site will need to be mobile and tablet friendly as well as direct traffic to my social media pages. Ideally HTML with javascript? I would like to be able to implement a discount program for new likes on my Facebook page, where when a new user likes my Facebook page, a promotional code would be generated for discounts on purchases from my website/webstore. I would like some connectivity to email blasts and the ability for a user to join my mailing list from the website. I would also like to implement some sort of image protection for my higher res images if possible. Ideally the store would be as automated as possible, and I would be able to easily manage inventory and add new artwork, prints, clothing, etc. I would like a few additional pages on the site for current exhibits, past exhibits, artist statement, biography, and possibly a future blog. I am familiar with graphic design, but have very limited knowledge of coding/web/etc. I would prefer a different platform than Wordpress. I am open to design direction and suggestions. The overall look I am going for is clean, elegant, modern, with minimal color. Mostly white and gray, possibly with one accent color. I would like the content (paintings, instagram feed, and artwork) to be the element of color and the focus. I can provide all content and can assist in editing content if needed. For reference, my current outdated site is [login to view URL]