Wordpress membership supply/design installation

Hi coders, I have a job for an experienced Wordpress expert and I will give a 10 rating for a great job on completion. The site is using "Golden Essence" theme and it and wordpress is up to date. I want a membership plugin supplied/designed & installed that will be page based with the following requirements as a minimum; 1/. Allow admin to add a member into various levels from within Wordpress 2/. Allow members to have individual pages that only they can access 3/. Be able to store documents in a secure area that can be accessed through the relevant levels or individual members 4/. Allow members to upload documents into their own secure area 5/. Allow prospective members be sent a unique url to them which allows them to register at a predetermined level - the prospects details and membership level to be entered in "admin" and then send an email or generate a link we send via outlook 6/. Login page will also display different levels of membership (number and name of levels controlled in "admin") to tease them into wanting higher levels. There will be level name and text to describe it. 7/. On the login page, there is to be an "upgrade" button (which can be activated or deactivated within "admin") which takes them to an upgrade page with options (radio buttons). Backend options for the buttons which are controlled within "admin" are a) they are taken to PayPal for either a 1 off or re-occurring payment b) an email is sent to a nominated company address which can be changed in "admin" and their details are transferred from their membership to the email. If an email, an optional box for them to enter text c) we can set a url for them to go to (eg. a shoppingcart) You are required to source or code such plugin and install it to successful operation on my site.