Wanting to do a total upgrade using the  Area 51 r2 chassis. Would greatly appreciate any ideas on posts upgrades.  Would like to use dual 2070 supers

Original parts

Dual NVIDIA GeForce GTX 970 with 4GB GDDR5 each (NVIDIA SLI)

Power Cord, 1500W

 512GB SSD 6Gb/s Main + 4TB 540 0RPM SATA 6Gb/s Storage

Centauri CPU heatsink

 Intel(R) Core(TM) i7-5820K (6- cores, 15MB Cache, Overclocked up to 3.8 GHz w/ Turbo Boost)