What a great summary about the pre-optimization /research phase of keyword discovery and the brain storming session that ensues thereafter.

With so many related terms caught in the shuffle, it can be difficult trying to narrow the focus from thousands of keywords to a few dozen.

On a side note, you could always use the ~ (tilde) in front of a keyword as a search operator in Google to find potentially aligned keywords from L.S.I or semantic word stemming in the search index, from there you can formulate plenty of qualifiers to augment your main keywords and get twice the punch for virtually theming your links.

Finding the right terms for building links and anchor text ratio needed to topple a moderate to competitive term all starts from chipping away from enough angles that your pages climb the long tail and take over the main phrases.