Customization required on shopify

We are looking at two customizations on our website theme which will be built on shopify. We are using the following theme: [login to view URL] Requirement: 1) Filter of time and date on a separate page: Check the following link for reference: [login to view URL] You will see that based on two date filters, the products are getting displayed. Customers need to enter time and date for home trial and also enter the date on which the product will actually be needed - based on these two criteria products will be displayed 2) Date wise availability of product: If we are on the product selection page then before the customer tries to add a product to cart we want to show the dates on which the product is available. The dates on which the product is unavailable will not be selectable. You can refer this link and see how it's done: [login to view URL]