Get Top 10 in Serps

Hello, We have a website selling various types of invitations. We currently have a PR3 but get little organic traffic. I need someone who can get at least half of our main keywords in google, yahoo & msn top 10 and the other half in at least the top 30. I also am interested in on going maintenance for you to keep our position once there. If top 10 is acquired for all 10 keywords within 3 months I will give coder a $3,000 bonus. Please only bid if you have references for prior work. Keep in mind I do not want to get thrown in google's sandbox. Our main keywords are below. Thanks