SEO Solution Required - Vast experience necessary

Hi, We are a new online auction business looking to launch our site. We require a full SEO solution. Our requirements are as follows: Real SEO company or consultant to rank in Google Top 5 Placement for 20 keywords. The winning person will be fully responsible for the whole project to achieve rank with ethical and organic SEO techniques. We will not allow any black hat processes. The successful person must also prove to be experienced with content writing. The 20 targeted keywords will be provided to the awarded bidder. We will pay based on the results for this project. We will release funds according to your results percentage - for example, if you achieve 50% keywords ranking in top 5 Google search results - you will receive 50% of total agreed amount, payment released immediately through Freelancer escrow system after showing proof of ranking reports. We are only concentrating on Google ranking at this stage. After ranking all 20 keywords in the positions above - We would then like to set up a monthly subscription with the successful bidder to maintain the rank. If you are interested - Please bid on this project by mentioning your previous experience and result details with a full proposal and deadline. Please provide a timeline and work plan. Automatic bidding will be deleted immediately. Please read the post and quote according to that if you are 100% confident that you can provide this service. Wishing you happy bidding - Please mention - "BROWN" when you are bidding to avoid spamming.