I'm buying a site that's well established and earns about $500 a month in revenue. The design I know I can improve on without sacrificing rankings. However, what about the content? While readable, the content on the site isn't the best. Would it hurt it's current rankings if I rewrote the content? Also, would 301 redirecting a URL to a new one (to improve content organization) hurt rankings as well? For example, redirecting /page to /category/page Any advice would be heavily appreciated!