Website Opimization

This week I became swamped with unprecedented family things/work. I know we have a lot of things to do but I have completed the description: Our website has been through quite a lot of changes, updates, and development and through this process, the website's performance and speed has decreased dramatically. We are looking for a provider who will optimize our code for our Wordpress site and its extending plugins. We want the provider to address the following issues: One of our plugin's layout has been built with tables and we would like it replaced with a CSS styled layout. We believe that there may be a need to correct some jQuery plugin issues. Anything else you can suggest as the developer to improve (enqueuing scripts properly, removing unnecessary/multiple jQuery calls, picking from or condensing lightbox/thickbox/fancybox, plugin conflicts, PHP errors, etc). In the end, all of our currently functioning plugins and implementations should still work and work better. Anything you break, you fix.