You forgot one large part of the equation, to check how many people search for your keywords. In this case noone according to overture and wordtracker.
The most common process that a lot of people use is.
1)Find a keyword with xxx number of searches per day 2)Check the competition (see how many results a google search returns and the strength of the sites in the first page) 3)You could also check how much that keyword pays And then find a good domain, create content optimize create inbound links etc.