Calender Booking And Child/Adult price For Virtuemart 1.1.5

I'm currently in need of a developer that can add the following customization into my VM 1.1.5 Installation on a Joomla 1.5 site [login to view URL] Description: This travel site will need on the product details page 2 custom attributes: 1. Will be a calender where the client can choose the date of there trip before adding the product to the cart (as well, they shouldnt be able to add to the cart without choosing a date in the product list pages either) a. The Product order and invoice must contain the chosen date b. The calendar must also work in a way where some dates CANNOT be chosen and must be configurable for a admin in the back-end. Ie: Oct 15,18,22 2010 are the ONLY dates that can be selected for example product A. Some products will have full flexibility of dates (ie: ANY day), while other products can only be chosen for days the admin lists as available. There needs to be a calender as well in the back end where an admin can CHOOSE the available days easily. 2. I need two product prices, 1 for adult and 1 for children (children being 50% off in some cases, but again, must be a back-end configurable price) The admin will not be able to understand child prices and parent products etc. So this all must be very simple configurations. NOTE: Think of an airline website where you choose the date of your flight, and the number of adults and children. This is exactly what I need. Please also keep the custom template and button design intact.