I have been out of seo for a while. I want to know the following: 1. How many high pr, high authority backlinks should I throw at my website to rank for a exact match keyword with 1300 exact searches a month according to google keyword planner tool. The website on the first page, first position of google has about 17,000 backlinks to their home page or index page according to ahrefs.com and the last website on page one in the 10th position has 12k backlinks to its domain with 179 referring domains, url rank of 31 and a domain rank of 49. When doing an exact keyword search on google, "xxx xxxxx" I get about 69,400 results. I am thinking about buying sahil service Niche Monsters for high authority backlinks. I want to know how many backlinks I would need to rank assuming I have 0 and also how long? 2. If I buy a domain I previously owned and did seo on and it still has some quality backlinks (about 50 with 12 referring domains) and its aged about 2-3 years. Would it be a good idea to buy the domain back and 301 redirect to my new money site? Will this pass decent seo juice to help it rank?