I confirm you can perfectly work with such setup
Even 16GO of Ram is far enough. And the CPU with 4 * 2.5 Ghz you also have enough, especially if it’s a little FPS (For strategy it will depend the scale and the optimisation you did). Still an SSD is highly recommended without it might, this time, be much more slow.
The Epic Team have obviously Gargantuan setup but it’s the Epic Team. Everyone would be kidding if they would have less. But a Solo Dev you can not compare.
And don’t forget If You can NOT run it your Customer will not be able to run it too.