Build a Website

We need good clean website, we need online store capabilities for later use if needed, the online store will sell off grid power systems and batteries and solar panels, the site must be 100% Google compliant so the we get the site to first page of search engines so SEO is important, we need the site easily changed with its content, images, store, we need high quality videos easily inserted, ideally we need a site with simple CMS so we can upload images then drag and drop same with page layout and design, each page we would like contact us for quotes or information forms, we have current site but its SEO isn't good, [login to view URL] it has no video and contact form is incomplete.