Edit Pages on an Existing Site (Gamemasters.co)

Our site is about 95% complete but some pages need updated and polished before we can launch. This includes, -Removing the negative space located above the banner image of the home page of the mobile version. - The size of logo in the header of the mobile version of the site needs to be adjusted -Adjusting the size of the banner image on the home page of the desktop version. Currently its way too big. -Making the featured vendors products displayed on the home page randomized so all the feature products have a chance to be displayed on the homepage and other pages of the site. -Customize the "Forgot Password", "Newsletter", and "Support" emails from the Wordpress default version to a version that represents our site. -In the vendors dashboard the "Edit Product" page is formatted differently than the rest of the pages in the Vendors Dashboard, we would like this page to look like all the others. -When users sign up to become a buyer/vendor on the site we would like a box to pop up with the "Terms and Conditions" and "Privacy Policy" that users have to check verifying they read the documents before they can start using the site.