New Build Check Request

I think I finally have a handle on the build I have been looking at since i9X — X299 and Threadripper / x399 was announced, and I'd appreciate it if you guys could pick any holes in it.  This will be used mostly for Photoshop, but with maybe 10% Premiere Pro, After Effects, SketchUp, and general use.  I currently use a 3930K with 32Gb RAM in a X79-UD5 board with GTX970.  I do complex illustrations with nested Smart Objects, and at least one of these bought my system to an unusable standstill.

i9-7900X — I'd decided on 1920X for a while, because I like some of the X399 motherboards, but too many of the Puget Systems tests were giving the edge to the 7900X, and I found an X299 motherboard that was working for me.  It would cost me another NZ$400 for the 7920X, but that would give me a performance hit with Photoshop, and it feels daft to pay more to go slower.

ASRock Fatal1ty Professional X299 Gaming i9 — this was not even on my list because it does not appear on most of the New Zealand suppliers, but I came across it on this super handy X299 comparison table.   I found that NewEgg has a NZ page and carries it. I'm actually a bit torn between the i9 and K6 version of this board.  The i9 has slightly better on-board power delivery with 13 phases to the K6's 11.  The K6 has four more USB2.0 headers (they both have the same USB3.0 and USB3.1 types A and C.

32Gb G-Skill Trident Z 3600Mhz — 4 x 16Gb 3600 CL17 4 x 16Gb (F4-3600C17Q-64GTZSW) These are recommended for X299 and X399.

GTX970 — bumped from my 3930K box.  I'll put the GTX570 in the old box for my wife.  Compared to what she is using now, it will feel like an early Cray!  This is to break the build cost up a bit, and just in case Nvidia do make a desktop version of Volta available next year.  It that has not happened by this time next year, I'll get a GTX1080

Cooler Master Silent Pro Gold 1200W — I didn't set out to go all Cooler master.  It just worked out that way, and I trust their kit.

Cooler Master Cosmos II Ultra — I'm a bit embarrassed about this.  It is ridiculously OTT even dwarfing the Cooler Master Storm Trooper I am using now.  I'm going to need to modify my desk to make room for it, (I've already started that process.  it won't fit under the central draw in my desk, so I am going to have to remove the right side draws.  This will mean making a hanger for the central draw, which is currently supported by the right hand draws.  I'm half way through doing this.)

Any 280mm AOI liquid cooler.  Possibly the Cooler Master Neptune

Samsung 960PRO 256Gb M.2 — boot drive. The 840PRO 256Gb in my current box always has about 100Gb free

Other two M.2 slots — I'll fill both, but would appreciate advice on this.  Shall I get another 256Gb for cache, scratch, etc. and a 500Gb for project files?  Or two 256GB or 500Gb so I have the option to raid0 them? 

I'll move a 840PRO 256Gb and 840EVO 1Tb from the other box, plus four HDD internals.  I'd like to retire the HDDs ultimately, but I can use them as 3rd level back up.  I also have eight USB3 externals.

Windows 10 Pro

I might also replace my aging Dell 2709W.  It has had that vertical lines issue for years, and even when it has been on for more than ten minutes, still looks like this Plus it is not as bright, and the whites are not quite as white, as the 24 inch screens I have each side in portrait mode.  Hmmm...  This is adding up to serious money.   I prefer 16:10 screens, and this Dell is the most affordable proper screen  Anyone had experience with these?  Amazon has a few people with issues