Shopify, SamCart Expert

Hi, I'm starting a productized line of business to sell digital downloads, I'm looking for an expert to build my site on Shopify for the main store (I already own the domain to connect to from GoDaddy) and integrate SamCart for the one page checkout (and upsells). To round out the initial tech stack, I would likely need Zapier to manage customer data across both and Kajabi to manage emails (open to recommendations). Eventually I would also sell on Amazon and Etsy.