Child theme, Wordpress

Currently got a website based on Wordpress but running a classified theme. I want to changed the layout of the homepage to look like: [login to view URL] I'm just looking for a look alike of the homepage ONLY. I already got a carousel with the pics running on the homepage and also the categories. What I need is to modify tings a little bit so I have space to the right of the homepage where I can add a right side bar using the admin area of the website so I can put widgets or a 300x250 banner if I wanted to. you will need to make sure that after the new layout is finished all components of the homepage (header, categories, side bar, footer) will function. I already got in the admin area of the website a display settings section where I can use different layouts. I want to make sure that if I need to revert back to those layouts, I can do so with no problems. If I wanted to go back to use the new layout, I should be able to do so with no problems. I'm looking to assign someone to project today to start work immediately to be finished asap. If you not able to work over the weekend please don't bid. Budget for the project is $80. half to escrow when chosen for the project and other half when project is finished and tested.