Magento new product type with appointment schedule - repost

As our business offers repairs to our customers we are looking for a product type that includes an appointment schedule where our client is able to choose his appointment (day and time if available). As we offer 3 types of delivery and return options, the appointment calendar is only applicable to 2 of them. a) customers delivers and picks up his device (appointment required) b) customer delivers his devica and we ship it back to him (appointment required) c customer ships the device to us and we ship it back (NO appointment required) This extension is similar as: [login to view URL] and [login to view URL] We suggest you have a look at these before bidding on the project! Either the customer makes the appointment in the product page or at the checkout page, doesn't matter for us where the easiest place to implement is ok for us. The calendar should be configurable: we choose the time slots and days available for the customers to choose from (f.e. monday till friday inbetween 10am and 17pm) Each time slot is 1 hour. When a customer has chosen a time slot it should not be available no more for another customer. Appointment details need to be visible on the order confirmation and/or invoice. Contact us for more details if needed. Please only bid on this project if you fully understand what it is about, if not ask us for info. Thanks upfront Erwin