Build an Online Store

I need some change to my existing magento website. My name is bruce. i am building an online retail store in order to sell cosmetics and snacks online. The website is built on magento platform. I have purchased a theme for my website. The theme link is \"[login to view URL]\". i am satisfied with most part of the theme except the home page layout and design. i want to modify the home page. In addition, the theme comes with mobile responsive feature. The feature is not that good, so i want to add a link in the footer that allows mobile and tablet users to change to desktop view. I have include a photo, made by photoshop, about extractly what layout and looking that i want. I want this job to be done within 1 week. Thanks!