Why are you building a new PC with a 6th gen Intel processor?
If you're going to build a PC for gaming now build using either a current gen (9th) or a previous gen CPU (8th). Don't go any older than that for a new build.
You'll need a different motherboard for those generations.
The more modern motherboard will also have an M2 port, budget for an M2 NVME drive which is far faster than an SSD.
The rest of the specs are pretty good.
Do you really need a Blu Ray Writer? Most games now are digital. Even games you buy on disc have to be activated on Steam, Origin, U-Play, etc. When I buy physical games now I usually just tap the license code in and the game as well as all the updates downloads at the same time digitally.
Consider these points for a current gaming PC.