Mass, nothing I did was MY idea, I just incorporated a few different builds I found interesting and put them into one build. Have at it man, look forward to seeing what you come up with.
Half the tools I borrowed from coworkers...ask around, people usually don't mind you using their tools that are sitting around collecting dust. Shouldn't really need to be said, but power tools = wear glasses! Lots of metal dust and little chunks go flying when cutting up the case.
Yes, the through-hole fittings and washers are there because going from the pumps, to the grommet, to the rad was quite a tight squeeze [especially since I really wanted to keep the 140mm fan underneath the pump] and I was having some big issues on how I was going to connect it all. I saw the through-holes on another build, like the way it looked and thought it would help me out, which it did. The washers are there only because the case's holes were JUST slightly larger than the fitting.