Woooooah holy hell.
For a system that expensive, wait for Threadripper to come out next month, the flagship is 16 core 32 thread with high clock speeds for $1k.
4k 144hz monitors are also releasing soon, and the Nvidia 11 series after that.
Get the 1080 Tis last when you're build the rest of it, I'll make sure they're EVGA cards so you can step up to an 1180 if they release within 90 days, meaning you pay the difference, send back the current cards and get new, better GPUs.
PM me when the time arises, sit tight for now, no rush.
All the good shit releases next month.