SEO Assistance Existing Website Needs Modification

Simple redesign and development of pages for our 3d cart eCommerce site. SEO Assistance, I need to fix some bugs/ functions changed/ removed/ added to the existing site. I have a list of things that i need fixed. I have spoke with a couple of SEO experts that have given me a list of changes or modifications to my site. For example more keywords on our front page, We have 150 categories and 655 products=pages – which is a huge presence to get traffic, but the pages SEO is not working for us. The meta descriptions were put in on some pages, but not effectively written. We need help with this. We NEED LEFT sidebar with more text – “keywords”. We need it to be modified to be easy to navigate and great SEO. We have categories toward the bottom, page (position is important to Google, as is the proper code.) We Need it [login to view URL] modified to have more searches for not only catgories but also with shop by collection or brands. Add strong SEO to each pages (keywords) We need to change Home Page to work for us.. Google has no idea what we sell. Plus the slide show displays over to the right (off the web page) until everything downloads – so we have slow download working against us with Google. BOTTOM LINE: WE NEED SOMEONE WHO KNOWS HOW TO MAKE THESE CHANGES AND CAN HELP US GET US MORE TRAFFIC. I will be having my seo experts check to see if all work is done properly.