Need Top 10 ranking on Google.com for mp3 players related website

I am looking for someone who is expert in doing seo. My website is related to 'mp3 players'. I want my website in Top 10 on [login to view URL] for 10 keywords. - Payment after results are achieved within 3 months. At least 6 keywords (selected by me. moderate competition for keywords.) should be in Top 10 within 3 months time frame otherwise you have to continue achieving results but I will pay only for 3 months. - You must follow all White hat SEO methods. No BLACK HAT SEO at any cost will be accepted. - My budget is $100 to $200 per month. Tell me your monthly pricing while bidding. - If you succeed to achieve results for 3 keywords (selected by me) in one month, I will release 30% payment at the end of 1st month. similarly, for 3 keywords (selected by me) ranking in Top 10 in second month, I will release another 30% payment. Time line: 3 months