Bladen

thank you both for your opinions and taking time out of your day i will put what you said in consideration 

Thank you so much for your help and time

he doesn't need these for a rig that's only for gaming.

no problem

this would be a better fit for just gaming;
PCPartPicker Part List
CPU: Intel Core i7-9700K 3.6 GHz 8-Core Processor  ($359.99 @ Best Buy) 
CPU Cooler: be quiet! Dark Rock Pro 4 50.5 CFM CPU Cooler  ($84.53 @ Amazon) 
Motherboard: Gigabyte Z390 AORUS PRO WIFI ATX LGA1151 Motherboard  ($199.99 @ Newegg) 
Memory: OLOy WarHawk RGB 16 GB (2 x 8 GB) DDR4-3200 Memory  ($71.99 @ Newegg) 
Storage: Sabrent Rocket 512 GB M.2-2280 NVME Solid State Drive  ($59.98 @ Amazon) 
Storage: Seagate Constellation CS ISE 3 TB 3.5" 7200RPM Internal Hard Drive  ($58.99 @ Amazon) 
Video Card: EVGA GeForce RTX 2080 Ti 11 GB Black Video Card  ($1039.99 @ Newegg) 
Case: Fractal Design Meshify C ATX Mid Tower Case  ($94.99 @ Amazon) 
Power Supply: Corsair TXM Gold 750 W 80+ Gold Certified Semi-modular ATX Power Supply  ($89.99 @ Newegg) 
Total: $2060.44
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-09-26 10:17 EDT-0400

Depends on who you ask...I’m definitely not the expert.
 
I’ll call his lord and majesty of the power supplies, @LukeSavenije down from his abode on high.
It’s not worth it if you can get a 3900x for the same price as a 9900k, or a 3700x for the price of a 9700k.

3900x version
PCPartPicker Part List Type Item Price CPU AMD Ryzen 9 3900X 3.8 GHz 12-Core Processor $499.99 @ Best Buy CPU Cooler be quiet! Dark Rock Pro 4 50.5 CFM CPU Cooler $84.53 @ Amazon Motherboard Gigabyte X570 AORUS ELITE ATX AM4 Motherboard $197.00 @ Amazon Memory G.Skill Ripjaws V 32 GB (2 x 16 GB) DDR4-3600 Memory $149.99 @ Newegg Storage Sabrent Rocket 1 TB M.2-2280 NVME Solid State Drive $109.98 @ Amazon Storage Seagate Barracuda 2 TB 3.5" 7200RPM Internal Hard Drive $64.99 @ Adorama Video Card EVGA GeForce RTX 2080 Ti 11 GB Black Video Card $1039.99 @ Newegg Case Fractal Design Meshify C ATX Mid Tower Case $94.99 @ Amazon Power Supply Corsair RMx (2018) 650 W 80+ Gold Certified Fully Modular ATX Power Supply $85.89 @ OutletPC   Prices include shipping, taxes, rebates, and discounts     Total (before mail-in rebates) $2377.35   Mail-in rebates -$50.00   Total $2327.35   Generated by PCPartPicker 2019-09-26 10:20 EDT-0400    
9900k version
PCPartPicker Part List Type Item Price CPU Intel Core i9-9900K 3.6 GHz 8-Core Processor $474.99 @ Amazon CPU Cooler be quiet! Dark Rock Pro 4 50.5 CFM CPU Cooler $84.53 @ Amazon Motherboard Gigabyte Z390 AORUS ELITE ATX LGA1151 Motherboard $169.99 @ Amazon Memory G.Skill Ripjaws V 32 GB (2 x 16 GB) DDR4-3600 Memory $149.99 @ Newegg Storage Sabrent Rocket 1 TB M.2-2280 NVME Solid State Drive $109.98 @ Amazon Storage Seagate Barracuda 2 TB 3.5" 7200RPM Internal Hard Drive $64.99 @ Adorama Video Card EVGA GeForce RTX 2080 Ti 11 GB Black Video Card $1039.99 @ Newegg Case Fractal Design Meshify C ATX Mid Tower Case $94.99 @ Amazon Power Supply Corsair RMx (2018) 650 W 80+ Gold Certified Fully Modular ATX Power Supply $85.89 @ OutletPC   Prices include shipping, taxes, rebates, and discounts     Total (before mail-in rebates) $2325.34   Mail-in rebates -$50.00   Total $2275.34   Generated by PCPartPicker 2019-09-26 10:22 EDT-0400    

and I'm just a guy with way too much time
 
rmx is better than mwe gold

Yeah I guess this could be pretty good if you’re looking for raw frame rates.

Don’t bother with the 9900k. It’s about the same price as the 3900X but at this point not worth it. (In my opinion, others may disagree) 
 
This would play every title you throw at it at ultra settings with fantastic frame rates. Do you need a monitor or peripherals included in the $2500 budget?

Yeah if it fits sure, the 9700k is also a good choice as previously said.

You can pull off a pretty ballin' rig for $2500. Made some changes for you, went for a black with hints of RGB aesthetic. The 3900X will give you some future proofing, that’s why I left it in. Beefier CPU cooler to match the theme of the build, faster ram, more ssd storage, different case (again to match theme, but you can change it to whatever) and a different power supply. 
PCPartPicker Part List Type Item Price CPU AMD Ryzen 9 3900X 3.8 GHz 12-Core Processor $499.99 @ Best Buy CPU Cooler be quiet! Dark Rock Pro 4 50.5 CFM CPU Cooler $84.53 @ Amazon Motherboard MSI MPG X570 GAMING PRO CARBON WIFI ATX AM4 Motherboard $249.89 @ OutletPC Memory Corsair Vengeance LPX 16 GB (2 x 8 GB) DDR4-3600 Memory $85.89 @ OutletPC Storage Sabrent Rocket 1 TB M.2-2280 NVME Solid State Drive $109.98 @ Amazon Video Card MSI GeForce RTX 2080 Ti 11 GB GAMING X TRIO Video Card $1199.89 @ Amazon Case Corsair Carbide Series 275R ATX Mid Tower Case $89.99 @ Best Buy Power Supply Cooler Master MWE Gold 750 W 80+ Gold Certified ATX Power Supply $74.99 @ Amazon   Prices include shipping, taxes, rebates, and discounts     Total (before mail-in rebates) $2435.15   Mail-in rebates -$40.00   Total $2395.15   Generated by PCPartPicker 2019-09-26 10:05 EDT-0400