I just met with a lawyer who wants to beat his competitor in a niche and local small cities. The other lawyer has a pr 3 site with about 2k links going back to to it. To make things faster i found an expired domain in that niche that is a .com and used to have a pr4 (at least as go daddy expired auction says). will the pr stay once we install WP on it and a new site and start link building or its a waste of time and money? thanks for you advice.