So for this build I ended up migrating my existing SSDs and graphics card from my old system. Everything else was bought new in the last two weeks.
Along the way I did make one mistake. I was originally looking at the P2 (Platinum rated) version of the 850W EVGA power supply. Then the G2 (Gold rated) went on shell shocker and I pounced without looking to closely. As a result I got a PSU with a length of 180mm, instead of the P2's 165mm. The end result is that I couldn't fit a 140mm fan in the bottom of the case.
I ended up putting the 3rd 140mm Venturi fan in the side panel and installed a 120mm fan I happened to have laying around (still new in box) in the bottom of the case. That's also why I have two different brands of fan splitters. Originally I only needed two. The case came with two fans, I bought three, and the motherboard had three ports. Hence, two splitters. Adding a sixth fan required getting another splitter in a hurry, and the JBtek one was $5.99 and Prime eligible.
Overall I am very pleased and I have found that despite have six case fans combining for 565cfm, it's still quieter than my old PC with its three case fans.
My thoughts for the future include adding a 1TB SSD, possibly a second GTX 970, and maybe adding a second fan to the Cryorig H5.
One thing I will warn about this setup is that the fan on the Cryorig H5 blocks one of the four RAM slots. The other three are unaffected. Also, the documentation says the fan can be mounted higher on the cooler to provide a few extra millimeters of clearance.