Re: water cool video cards
Yes the 90 degree fitting would go right onto the block. They are actually quite cool let me upload a video explaining.
Also a few things I notice with your list. Not all of your fittings/hose match in size I believe. Some are 1/4in and some are 3/8in. Why are you going with 1/4in ID? I suggest at least 3/8in ID.