Shopify website development

Expand a Shopify site that we currently have running. Our current site can be found at [login to view URL] . If you go to our site and open the Homes tab, I want to replace what we have there currently, with something similar to the site you will find at [login to view URL] . The goal is to appear like an experienced capable building company. I have the professional photography of 50 projects for the gallery ready to go and we will create new content, and glean from our current site, copy for the rest. Once we get this done we want to revise the rest of the site to match. Looking for a long-term go-to person to help us with this now, and then as needed in the future.