This, the 7800X3D out of the box is pretty much to most efficient gaming CPU you can get right now (both price and power consumption. It's doesn't produce a lot of heat, so a 360 AIO will keep it nice and cool, but something like a Noctua NH-D15 or a Thermalright Peerless Assassin will also work perfectly.
Pair it with some low latency DDR5-6000 to get the best out of it, higher frequencies usually don't offer too much benefit on AM5.
As for overclocking, a 7800X3D is locked down, you may optimize the curves a bit to get better performance out of it, but don't expect too much margin. You're more likely to get some gains out of overclocking the GPU, but even then I wouldn't expect anything near a 10% gain.