Ah...your specs look mighty close to mine.....must mean we're both doing something wrong..
Not something wrong, just trying to get the best tech for the money... and after reading the specs on the 5960X I thought: "I just gotta get me one of these."
Of course, I will be going with your 1st choice of mobo... it has the slightly better specs and has the ROG colour scheme, black and red, which appeals to my inner demon... not to mention it will look ultra-sexy in the Cosmos II.
I am coming down a notch with the graphics card, though. Apart from trying to remain within a predetermined budget, I wouldn't be running FSX or ultra-high-end games, so a GTX 970 will be quite sufficient. However, if the new-tech prices come down as expected, and there's a 980 - 990 going for a song, well maybe I could end up with something a little higher.
There aren't too many choices going for DDR4 RAM at the moment, but I do expect that companies other than Crucial will have various offerings, with kits of 4 or maybe even 8 sticks available for the x99 boards, so my choice of RAM isn't set in concrete just yet.
Remember...when you use the M.2 you won't be able to populate all the PCIe slots as the case pics show. Shares bandwidth with slot 5
I was aware of that and counted it into my configuration ideas. Fortunately it will not have an effect. I will not be running two graphics cards in SLI for a start, meaning I will have three slots remaining, of which, only one needs to be kept free for my sound card. I do have a TV tuner and other expansion cards for additional SATA and USB 3 ports, etc, but I shall decide on the most important on build day.
Yes, when I started looking into the Level 10 I'd seen reference to it being strictly limited...and CPL and PCCG both listed it as 'in stock' but when my first-choice locale [CPL - it's closer] said it was out of stock I didn't ask for it to be ordered in...instead chased up PCCG who did have it. Then when it seemed to be taking 'too long' to turn up I was paranoid someone else had it 'double booked'
Fortunately it wasn't 'double booked'... but I know what you mean about getting paranoid when things seem to be taking too long to arrive... especially when it's a new supplier you've not done business with before... and even worse when paranoia turns into frustrated, panicky paranoia because every delivery van in your street is stopping at everybody elses place but yours... and when a delivery driver eventually knocks on your door just prior to knocking-off time, all he wants to know: "Is that your cat I've just run over?"
By then you're just about ready to strangle him... and it wasn't even your cat. You're also ready to strangle the neighbours who got their parcels on time, but instead you go into the bathroom, look into the mirror and start counting to see how many hairs you pulled out during the course of one of the longest days in your life. To be honest, I have considered a toupee to limit the physical damage, and cos it don't hurt as much, but at the end of the day, the toupee is put on hold as my insatiable lust for PC parts wins out yet again.
Hehe! 
Seriousy, waiting is usually the hardest part... the next is turning it on, placing a finger in each ear and waiting for a bang... and then it's looking at your bank balance and crying over the large chunk that's missing. But then you look at your handiwork, the fact it is running as expected [hoped for] and think the who shebang was worth it.... and you, you lucky bugger. has a collectors item case that'll be worth a mint in years to come. Yup, 'worth it' is an understatement in your case [pun intended]
