Prestashop theme small changes (Drop down menu, module positions, colors)

Hi all, I need professional help to solve some small issues with a Prestashop theme I’ve bought (Arundo, [login to view URL]?WT.ac=search_item&WT.seg_1=search_item&WT.z_author=MarekMnishek ). The code is clearly written and the online support is very good. The temporary website address is [login to view URL] List of changes: 1. Header: I want to add 3 dropdown menu like the existing one: search by color, search by material and search by price range (1€-10€, 10€-15€, 15€-20€, 20€+). I also want to change the word “Inicio” with “Todas las categorías” Please see here: [login to view URL] 2. Footer: I want to eliminate the facebook module, and move 3 links in a new position (in a “Contactos” block). Please see image: [login to view URL] 3. Search result page: For some reason when a product is out of stock it appears with an orange button, and when it is in stock there is no button. I want it the other way round (In stock: Orange / Out of stock: no button) Image: [login to view URL] 4. In product page one of the button is misplaced (maybe because the “Buy it now / Compralo YA button is too large?). I’d like to move it in the right position. Image: [login to view URL] 5. I need to actualize, configure and test the module to pay with Paypal (I’m using it with version 3.4.1 with my Prestashop 1.4, but apparently it has to be updated for Prestashop 1.5 6. (Optional): I’ve bought the module One Page Checkout for PS 1.5 but when I try to install it I get the following error: Files in /override folder are not writable, we need these: classes: [login to view URL], [login to view URL], [login to view URL]; controllers/front: [login to view URL], [login to view URL], [login to view URL], [login to view URL] I consider this work optional because I don’t know if it can be solved without manipulating server options. In principle the files looks writables… Thanks you for your offers. Regards, Francesco