Wordpress Blog SEO works

We have a blog site that needs a bit SEO works 1) Configure/debug the ALL-IN-ONE-SEO plugin to allow the post meta "description" be override by the description we manually entered on each post. We suspect some php debug is needed as we have turned default "first sentence" description option off in AIO plugin but our post are still indexed with "author name+ date+ first sentence of blog" as meta descrition of content. 2) Need to configure site and AIO&Sitemap plugin so only home page and the single post are indexed (not archive links, etc.. to avoid duplicated content) 3) Make "WP super cache" plugin works. (it is installed but not configured as we do not know how-to). You need to show past experience with similar task, preferably show us some WP blog site you manage thanks