VPN Server Administration Panel (PPTP, L2TP, OPENVPN, Radius, PHP, MYSQL)

Hello there! Thanks for opening this listing. Details: I want to provide VPN services for users, which can connect to vpn servers with a user/pass and surf the internet. Requirements: Server - We are using VPS Servers, running Debian Wheezy 64 bit. Client - Any OS to connect to the VPN 1. Secure PPTP, IPSEC VPN, OPENVPN [login to view URL] Server - Freeradius installation & mysql integration with users database. 3. Website - Users registration, pay for vpn service via paypal and credi tcard. 4. Admin Control panel - User management/edit/add/remove. Description about 3. and 4.: I need a basic Website with an Admin panel. Users will be able to signup for packages and pay Instant via Paypal/Payment Processor. I should be able to add Users in the Admin panel to our VPN Servers, should be able to set a usable quota and a timeframe, e.g. 30 days, 500mb. Users should receive E-Mail, with detailed login informations. I don't need a highend website, only the functionality needs to work flawless, as the Budget is rather small. I prefer users with similar references, and good feedback. I would prefer European/American freelancers but everybody is welcome. Milestone Payments are Ok.