You must have a huge knowledge of DIY type products to plan out all these things, everything u do looks so good!. If you happen to have time i would love to know how you sleeved those headers.
__________________ <<<Please give me Rep if I have helped you<<<
Pretty easy, just slide the cables thru the sleeving and heat up the heat shrink. You can find lots of heat shrinking guides in Google, I buy my heat shrink from performance-pcs.com
People have asked about the 250mm cooling fan. I posted Guide to installing a 250mm cooling fan in your case here
Put that PC in a small room with a window open and you have yourself a wind tunnel . Build is looking awesome so far, can't wait to see the finished product!