Backlink Campaign

Quality back link campaign. I run a company called Changing Space. The domain '[login to view URL]' has been live for 7 years now and we have recently launched a new e-commerce web site. I would like a back link campaign for the website. I require relevant, quality backlinks from PR4+ web pages based on key words such as furniture pack, furniture packs, furniture packages, landlord furniture, buy to let furniture etc. I want to quickly get up to 500 quality backlinks, done in a way that looks natural and then for it to be an ongoing campaign.