You've got the right idea, but being a stickler for details I have some comments....
1. Check you gramar and spelling. I saw quite a few typos.
2. Expound on problems you encountered to help others avoid them. I saw one sentence about you crushing your CPU. This is a serious issue, yet I saw no further details explaining how. Also, something about the molex, relay, and noise. I'm guessing your meaning don't hook up anything besides fans or pumps to the molex coming from the relay as the 120V AC is causing a little noise in the relay?
3. Include part numbers in your parts list.
4. How about a few before and after temps. Make sure to be detailed including room temp, case temp, etc.
Other than that, nice work.