Update website theme and to latest magento version

Current website is Magento 2.2.2. I need a FRESH install of magento latest version and FRESH install of already purchased theme with selected demo. THEN migrate the products and installed extensions plus some custom extensions/code regarding shipping. Test everything and then replace existing site (push to production). All installed extensions, orders data, catalogue, categories, shipping, payment methods, rules and variations to be retained in new website. Thorough testing will be required. Mapping of ALL needed product feeds and mapping to Google merchant account and tag manager is also needed. All current functionalities in existing website to be maintained and bugs or misconfigurations (if any) to be fixed. Site to be SEO optimized.
current website is https://allfromjordan.com