Billing Panel & Game Control Panel

Looking for quite a large project done. This will be a Billing Panel similar to WHMCS along with a Game Control Panel similar to TCAdmin. We are looking for this all to be built into one system rather than separate software, this will have to be very user friendly. Some features of the Game Panel we will require: Multi-Server support, users will then be able to easily transfer their Game Server between Locations and/or Nodes. Start/Stop/Restart Game Service Multi-Service support per user. Simple File Manager per service. Game Monitor, see Player Count, CPU Usage, RAM usage etc. Sub-User with selectable permissions. Quick Mod/Addon Installation of common Addons. Service Console Viewer, interact with RCON etc. Main support needed for Valve Source Engine games, for example, Counter-Strike: Global Offensive and Garry's Mod. Limit services by CPU/RAM Usage rather than slot based. Our billing panel needs to be simple, select how much CPU/RAM you require and which game you would like to install upfront. Users will be free to select another game within the Game Control Panel if they wish to swap game. Only looking for developers that are willing to work alongside myself and are very fluent with English.