If you need help for picking out parts for a PC I'm happy to help!
The 500B is an 80+ Bronze
Uhm... I'm just going to say you made a few (actually a lot) mistakes...
1. So, first of all, you should've gotten a Ryzen 3 1200, because if overclocked, can do as good as a 1300X.
2. CPU isn't the most important thing, and you won't lose too many frames with an R3 1200 (maybe 1-2).
3. That motherboard is about £30 too expensive, there is almost no difference with lower end full ATX
B350 boards, except for maybe RGB, useless features, and bios.
So just with CPU and Mobo, you could have saved around £50.
Conclusion: If you followed all my advice, you could've saved around £100, and gotten yourself an R3 1200 with a GTX 1060 (3GB), which would be AT LEAST ~30 frames more. But that's a big underestimation. So next time you build a PC, or upgrade this one, keep my tips in mind :)!