crimsoncodr

Wow, everyone here is just awesome!  Thank you so much for all the recommendations.  I told my son after school today that we had the basic system configuration and we are about to start ordering parts (probably still going to make that trip to Virginia just for fun).  It would be an understatement to say he is excited.  I have bumped up the budget a bit to make RGB a little easier.  I will definitely be taking pictures as he builds and post the finished product giving credit where credit is due, you all! 
 
Thank you again, I appreciate it and hope over time I can return the favor to others.

Wow, everyone here is just awesome!  Thank you so much for all the recommendations.  I told my son after school today that we had the basic system configuration and we are about to start ordering parts (probably still going to make that trip to Virginia just for fun).  It would be an understatement to say he is excited.  I have bumped up the budget a bit to make RGB a little easier.  I will definitely be taking pictures as he builds and post the finished product giving credit where credit is due, you all! 
 
Thank you again, I appreciate it and hope over time I can return the favor to others.

https://pcpartpicker.com/list/HT2WVY
I know it only has a 1050 ti, but he is only 10 so it should be enough for him

@Thermosman My bad, painfully obvious I am new to the forum   Thanks again for all the help, awesome recommendations and definitely excited about getting started.

PCPartPicker part list: https://pcpartpicker.com/list/3yvd3F
Price breakdown by merchant: https://pcpartpicker.com/list/3yvd3F/by_merchant/
CPU: AMD - Ryzen 3 1300X 3.5GHz Quad-Core Processor  ($119.99 @ Newegg) 
Motherboard: ASRock - AB350M Pro4 Micro ATX AM4 Motherboard  ($74.33 @ OutletPC) 
Memory: Crucial - 8GB (1 x 8GB) DDR4-2400 Memory  ($82.88 @ OutletPC) 
Storage: Samsung - 850 EVO-Series 250GB 2.5" Solid State Drive  ($84.99 @ B&H) 
Video Card: EVGA - GeForce GTX 1060 6GB 6GB GAMING Video Card  ($259.99 @ B&H) 
Case: Cooler Master - MasterBox Lite 5 ATX Mid Tower Case  ($44.99 @ Newegg) 
Power Supply: EVGA - 500W 80+ Bronze Certified ATX Power Supply  ($38.98 @ Newegg) 
Total: $706.15
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-03 20:39 EST-0500
 
That's what I would really do and then add a 1TB HDD later on for more storage. If you get an SSD right off the bat there will be no headache of reinstalling windows and it will also teach him how to manage storage, becasue of how much faster and better games run generally on a SSD vs a HDD. I think the 6gb 1060 is the best card for 1080p gaming, but you can get away with a 3gb version or a 1050ti no problem. Also, CPU wise I think a higher clocked quadcore is much more worth it than a lower clocked 6 core cpu, even more so because the 1300X is cheaper. 
 
Also, it might be worth it to spend a little extra on the case just so it looks cool and is easier to build in. Maybe even get a full ATX motherboard for the looks too. Like the stick of memory I have selected is very ugly to save a few bucks, you can change and spend a lot in the name of aesthetics. Other than that, https://pcpartpicker.com/builds/ have a look at all the crazy things people are building everyday and I hope y'all don't get too a addicted to doing research  

This is a really good build. If you can get everything for those prices then I don't think you can beat it.
 
This is what I came up with:
 
PCPartPicker part list: https://pcpartpicker.com/list/VWxRLD
Price breakdown by merchant: https://pcpartpicker.com/list/VWxRLD/by_merchant/
CPU: AMD - Ryzen 3 1300X 3.5GHz Quad-Core Processor  ($119.99 @ Newegg) 
Motherboard: ASRock - AB350M Pro4 Micro ATX AM4 Motherboard  ($74.33 @ OutletPC) 
Memory: Crucial - 8GB (1 x 8GB) DDR4-2400 Memory  ($82.88 @ OutletPC) 
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive  ($41.89 @ SuperBiiz) 
Video Card: EVGA - GeForce GTX 1060 6GB 6GB GAMING Video Card  ($259.99 @ B&H) 
Case: Cooler Master - MasterBox Lite 5 ATX Mid Tower Case  ($44.99 @ Newegg) 
Power Supply: SeaSonic - 520W 80+ Bronze Certified Fully-Modular ATX Power Supply  ($49.99 @ SuperBiiz) 
Total: $674.06
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-03 20:32 EST-0500

Mabey try this
https://pcpartpicker.com/list/HT2WVY

try something like this, you can get windows from reddit for $25.
PCPartPicker part list / Price breakdown by merchant
CPU: AMD - Ryzen 5 1600 3.2GHz 6-Core Processor  ($189.98 @ SuperBiiz) 
Motherboard: ASRock - AB350M Micro ATX AM4 Motherboard  ($59.99 @ Newegg) 
Memory: G.Skill - Aegis 8GB (1 x 8GB) DDR4-3000 Memory  ($92.88 @ OutletPC) 
Storage: Toshiba - P300 1TB 3.5" 7200RPM Internal Hard Drive  ($39.88 @ Other World Computing) 
Video Card: EVGA - GeForce GTX 1060 3GB 3GB GAMING Video Card  ($204.98 @ Newegg) 
Case: Cooler Master - MasterBox Lite 3.1 MicroATX Mid Tower Case  ($35.98 @ Newegg) 
Power Supply: Corsair - CXM (2015) 450W 80+ Bronze Certified Semi-Modular ATX Power Supply  ($24.99 @ Newegg) 
Total: $648.68
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-03 20:24 EST-0500

Thanks so much!  Fairfax is about 6 hours from us (we are close to Charlotte), but that might be a fun weekend trip for he and I.  Always looking for opportunities to connect with the kid and increase his interest.