Change theme into responsive theme and customization

Hi, I need someone to change my old site into new themes (responsive theme), details as the following: a) I had purchased a new themes [login to view URL] and I would like to customize into one of the demo theme b) all my site content is ready (from existing site) and you only need to update the theme and customize the home page and content page into one of the design as per my instruction. Some customization might need for buttons and some page might need customization in pictures. c) In case some of page is not available, please use the dummy or demo content d) Back up my site and keep all the original SEO setting e) Since my site is live already, I need this job to be done within 24 hours. The most is 48 hours. f) previous experience require g) My site had about 30 pages.