Bookings Pro v2.0

STAGE 1: I need a clean design to sell travel online. The inventory in the shop needs to have different pricing options for Adults, students (Backpackers) and children - plus there needs to be seasonal rates - eg. holidays are more expensive during Xmas & Easter holidays. The CMS should allow 3rd party suppliers to log-in and update there inventory and product descriptions, it should allow payments online with an embedded credit card form (I have a gateway through [login to view URL]), and it should offer the choice to send out travel vouchers automatically. Once the CMS is built to manage inventory - this data should be able to feed 100's of websites - with filters so only relevent product appears on each domain. Last of all we should be able to launch new websites with ease (I already have 50 sites that I want to launch for different markets). I AM NOT INTERESTED IN ANYTHING JOOMLA BASED OR RELIANT ON MULTIPLE PLUG-INS...... I AM AFTER SOMETHING THAT IS WRITTEN IN RAW PHP THAT I OWN THE COPYRIGHT AND CAN EXPAND IN THE FUTURE. This is Stage 1 of a multi stage project that the winning designer will be part of.