$5000 with the i9 and 64 gigs you wanted:
PCPartPicker part list:
https://pcpartpicker.com/list/QLN8J8
Price breakdown by merchant: https://pcpartpicker.com/list/QLN8J8/by_merchant/
CPU: Intel - Core i9-7960X 2.8GHz 16-Core Processor ($1564.04 @ Newegg)
CPU Cooler: Corsair - H100i v2 70.7 CFM Liquid CPU Cooler ($94.99 @ Best Buy)
Motherboard: MSI - X299 RAIDER ATX LGA2066 Motherboard ($189.99 @ Newegg)
Memory: G.Skill - Ripjaws V 64GB (4 x 16GB) DDR4-3000 Memory ($685.99 @ Newegg Business)
Storage: Samsung - 960 EVO 500GB M.2-2280 Solid State Drive ($199.99 @ B&H)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($59.79 @ OutletPC)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($59.79 @ OutletPC)
Video Card: Zotac - GeForce GTX 1080 Ti 11GB AMP Edition Video Card ($904.98 @ Newegg)
Case: NZXT - S340 (Black) ATX Mid Tower Case ($59.99 @ SuperBiiz)
Power Supply: EVGA - SuperNOVA G3 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($115.98 @ Newegg)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($92.89 @ OutletPC)
Total: $4028.42
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-05-04 20:19 EDT-0400
16 core i9 processor. 64 GB of RAM at 3000 Mhz. 1080Ti. M.2 960 500GB SSD for OS and some programs, 4 TB HDD for others. PSU is quality. Includes OS.
$5000 with the Titan V:
PCPartPicker part list:
https://pcpartpicker.com/list/CX7t8Y
Price breakdown by merchant: https://pcpartpicker.com/list/CX7t8Y/by_merchant/
CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor ($339.69 @ OutletPC)
CPU Cooler: Corsair - H100i v2 70.7 CFM Liquid CPU Cooler ($94.99 @ Best Buy)
Motherboard: Asus - ROG STRIX Z370-E GAMING ATX LGA1151 Motherboard ($184.32 @ Amazon)
Memory: ADATA - 32GB (2 x 16GB) DDR4-3000 Memory ($309.99 @ Newegg Business)
Storage: Samsung - 960 EVO 500GB M.2-2280 Solid State Drive ($199.99 @ B&H)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($59.79 @ OutletPC)
Video Card: NVIDIA - Titan V 12GB Video Card ($3572.42 @ Amazon)
Case: NZXT - S340 (Black) ATX Mid Tower Case ($59.99 @ SuperBiiz)
Power Supply: EVGA - SuperNOVA G2 750W 80+ Gold Certified Fully-Modular ATX Power Supply ($93.98 @ Newegg)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($92.89 @ OutletPC)
Total: $5008.05
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-05-04 20:22 EDT-0400
8700k. 32 gigs of RAM at 3000 Mhz. Same SSD but 2 TB HDD. Titan V. PSU is pretty good. Has OS.