Couple thoughts on the day's work:
1) The Enzotech block IMO just isn't the type of quality you'd see in other blocks. The finish isn't as good as on other brands' blocks and there were some issues with it. First, the block was slightly bent out of the box. The mosfet block didn't fit the first attempt because it was angled wrong. I had to bend the block out a little bit. It wasn't a huge issue, but I was a little uncomfortable doing it and trying to avoid damaging the pipe that runs from the NB to the mosfets. Second, it really gets in the way of the RAM latches. Most of them next to the NB part of the block will not fully open now, some you can barely squeeze the RAM into the slot due to how little the latch will open. Third, I don't even want to try to imagine using my GPU in the first x16 slot. It would be hell trying to flip the unlocking latch on top of the slot because the board block is really in the way of that too.
2) The Koolance 5850 block was pretty easy to install. However, their instructions left out a major detail in the assembly process. There's a small thumb nut that MUST be installed otherwise the block can't be screwed down in one spot. It's pretty obvious when you get to that point, but that's a big oversight and it made me have to unscrew everything and re-mount again.
3) I'm aware that the optimal mounting orientation for the CPU block is to have the inlet/outlet going top to bottom, however running tubing between all those blocks would be a nightmare in that position. I might lose up to 1 degree on my temps, but it's worth it to make running tubing way easier.
Might tinker a bit more today. If anything I'll try to get the tubing on the board run.