multilevel marketing business

I'm in desperate need of a PHP website with a back-office for a MLM of a friend of mine. It must be something that we can edit after if we need, the main idea is like a multilevel website where on the back-office the admin could menage members, add products, set the comissions up to the X downline member,also could edit and add comission and compensation plans, manual payment page using bank transfers or automatic with paypal or other future payment processor, mailing feature to all the members and or customers, easy back-up section, hacker safe, the matrix plans should be like piramidal or binary and the admin should edit or change them and also set the percentage or ammount in €(euros) to each level and bonuses uppon register and new downlines. Multiple Product Support. It should be a multilevel store, people can see the products and buy them, there is a monthly minimun fee that every active member must pay and sellect one of the products. If possible a translation file for other future languages should be used like /languages folder using [login to view URL] as default language for example. I know that this description may be a bit confusing but please contact me in order to explain our main idea. After the script is done and tested we will make the full design of the website, we just really really need it working with a mysql database and simple stuff with description on the PHP. We have found interesting scripts but none was what we really needed. We are willing to pay up to 150$ at the moment. if we need the programmer after that in the future we will pay more for maintence or addons.