Is this a good first time pc build? Ryzen 5 1600

https://pcpartpicker.com/list/P3cL3F

Hello i am finally looking to build my very first gaming pc after weeks of just looking at the parts and saving up i almost have enough to buy the rest of the parts. I already bought some parts like the Graphics card,case,keyboard,mouse and power supply by the way is the power supply good enough for this build and maybe a future gpu upgrade to a 1080 or 1080 ti? Is the Samsung - 960 EVO 250GB M.2-2280 Solid State Drive a good choice as boot drive and will it work with this motherboard without any issues like having to update a driver or what not? Right now i only play a couple games like world of warcraft,overwatch,hearthstone and maybe ill download another mmorpg like Tera online. Will this 960 EVO 250GB be enough for those games and maybe a few programs? In the future i plan on buying 500gb 850 evo as more storage for games. I choose this ram because i read it is the most compatible and does not cause issues like other rams with ryzen since this is my first time build i really want things to go as smoothly as possible but is it fast enough? By all means if you have any suggestions let me know. As for the processor i have never overclocked anything before but after my build if all goes well i will do some research and give it a shot with the stock cpu cooler without increasing voltage. I will be buying my windows 10 key from reddit is that a good choice? But im not sure if ill have enough money to buy the key yet so for now i can install windows 10 pro without a windows 10 key right what is the difference? I will have this pc connected to my 55 inch Samsung ks8500 4k tv so i will have the resolution at 3840x2160 i know this graphics card is not very good and i plan to save up for a 1080 ti but for now the rx 470 is all i have. My biggest reason for building this pc is because my current one is just not good enough for me the motherboard only has 2 channel audio and the processor is too old (fx 4130) when i try to watch 4k youtube videos they run fine but when i try to watch 4k 60fps youtube videos the videos stutter and i think it is because of the cpu. With this motherboard my 5.1 channel home theater system should work via the hdmi port on the gpu right? on my current pc it on windows it only gives me the 2 channel option. I dont plan on ever doing crossfire or ever adding a second gpu to this build. I have always wanted to build a pc but i could never afford it and finally im about to be able to give it a shot i have no experience but have watched alot of videos. i have replaced my power supply on my current pc rig so im use to connecting the power supply to the mb. The only thing im worried about is installing the cpu and cpu fan and everything that comes after connecting all the parts like the bios and installing windows and installing drivers and not to mention running benchmarks. I have no idea how to benchmark or even what program to use i need a free benchmark/stress test program. And also how should i overclock everything like the cpu,ram, and gpu is msi afterburner a good program? As for the case fans im not quite sure what fans i will get the case comes with just 2 fans. I will be getting the proccesor and motherboard as a bundle. i am also looking at a bundle with this motherboard and ryzen 7 1700 for like $70 more but i might settle with the ryzen 5 1600. My color scheme is suppose to be something like black and white but with this mobo and keyboard and mouse its not matching right but i dont really care all that much about the color. I have watched alot of videos of builds with this motherboard so im really confident i can do this. Anyway im sorry for all the questions this is my first time building a pc and since enough money to build a pc is hard to come by for me i do not want to screw this up. Thank you for all your help this is a great community.