booking and availability functionality for joomla website

I have a site at [login to view URL] On each product of the "Book Now" page: The user will be able to check availabilty for each product, and also be able to select the amount of people as well as whether or not they want transport. On each product page there must be a calendar that shows availability, like the one in this example, [login to view URL] Its probably the Jevents extension: see [login to view URL] Or Jomres extension but not 100% sure. But if you can reccommend a better one please let me know. Once they have selected their different options, the total will be displayed and they will be able to add that to their shopping cart. The user will then be able to checkout and make payment. We would like to use [login to view URL] as our payment processor. They already have intergration modules built for various shopping carts. see [login to view URL] Admin: We as admins must be able to input availability for each product. I know this can be done in joomla very quickly. Our max budget for this is $80. Thanks