Simple SEO

I do not have a website, yet. What I would like to do is, describe my two sites in detail (I know the more specific the better for you), and then have someone produce a list of words for each website that are gems (good search numbers, low competition for advertising and low number of tag competition from other sites. I have already used the free google service, and I have tried wordtracker (free trial), and i heard it's great, but i dont have time to figure out how to use it. I would rather have someone that does this for a living quickly do this for me. Since this project is only to produce some good keywords (and of course give me the numbers behind your justification for each word), i am thinking the project should not take that long.