1st gen i5 is not good that would be a 10 year old cpu with a fairly moderate gpu worst thing I would do is upgrade your cpu and mobo I would go on eBay and try to find a 5th gen i5 or i7 and buy a cheat intel board. Bride for use case I don't see any reason to overclock. I think the rx 580 Is a good card me personally I would of gone for the 5500 xt but to each their own and also get more ram price out how much you can get a cpu and mobo for and spend the rest of memory. Your ssd and hdd are fine as long as your hdd is 7200 rpm