MAGENTO DEVELOPER - modify templates for e-commerce site

In our Magento website, we would like to change some features of the template but do not know how. 1. We would like to remove "Product Availability" from all products. 2. We would like to change the order of items in the right column. They should be in this order: My Cart, Compare Products, an image, then Related Products. 3. Under the Upsell items, we would like to change the title to add the line "Click on picture for more information" below in smaller text. 4. Under Upsell Items, we would like to remove the title and price, and we would like to increase the size of the thumbnail. 5. Under the Related Products section, we would like to remove the title, price, and the "Add to Wishlist" link. We would also like to increase the size of the thumbnail. 6. We would like to add some CSS so that each product option the user has to select is enclosed in its own box. We will provide a Photoshop mockup showing what it should look like. IS THIS POSSIBLE? In this section of the bid, we have several questions about what is possible with Magento. Can we add a second drop-down box for Custom Options? For example: The user would pick from a drop-down box that shows these categories: Weddings Christmas Halloween Then if the user selects "Weddings," a drop-down box would appear showing the options associated with Weddings, for example: Dresses Veils Flowers