Professional SEO needed for off-site optimization

We are looking for SEO company to help us with boosting the following activities for our website promotion: 1. Link-building 2. Presence in social media 3. Blogging (optional) If you can help with any of those, please make your bid and we'll be glad to talk. However, we do NOT need help in on-site optimization, neither we are looking for "all-inclusive packages", thank you. The approximate budget is $2000, but the details depend on how long we work together and what kind of activities are involved.