Copy Writing - Weekly Ads

We are posting a lot of craigslist ads. We need new subjects and new copy written 3 times a week, every week. We will provide the base copy and base title, and you will modify it so that it "sticks" on craigslist and more importantly, gets results. I need these titles and ads, 3 times a week for postings that go out Monday, Wednesday and Friday. I'm hoping for at least 5 different titles and 2 variations of ad copy 3 times a week. This will be a long term project and could become a daily thing depending on success.