Craigslist Posting Service

I need a good person or group to work with who has a lot of experience posting, and keeping ads up on Craigslist. I would like to post in all of the major cities in the 48 US states advertising our small business through the spring and early summer. This will require you to post our pre-designed ad in all of these cities every 48 hours (every 2 days) until then end of August. This may include up to 100-120 different cities. We will provide you with a list. You must be able to post these and do everything possible to keep them from being flagged. If they are flagged, they need immediately reposted. Please give me a quote for this service PER MONTH. We will pay you a fee per month for this service, starting with a 1/2 payment for the last 2 weeks of March to test your services. You will then be paid at the beginning of each month until August, with the ads stopping at the end of August, or potentially continuing.