We have made the website [login to view URL] in wordpress using For The Cause theme and woo commerce plus a variety of extensions. We are looking to make the site faster as well as making it easier to upgrade and maintain. This might involve checking the site for upgradeability (custom php code might be done in the wrong place) and streamlining the use of plugins. We would like to have a dialogue with the right person to make sure the job is well defined as we are not fully sure what it would take to do to achieve our goals. Plugins include Page Builder, polylang and Akeeba and quite a few more. Stylesheets would most likely need to centralised and streamlined, amount of plugins reduced, child theme to be made and some custom php code.