Don't forget that your input (mouse, keyboard) must travel to the other end before you can start receiving the output that's changed from it. The time from you performing an action to the point where you see that change represented (minus the time to do this locally on the gaming PC) is the actual latency.
It's still probably well within your acceptable tolerances, but worth keeping in mind.
I'm assuming that the mouse/keyboard can begin processing as soon as the network call is done. If true that's about 5ms.
Keep in mind that different mice vary in their latency. Even wired mice can vary from 1.5ms to more than 25ms in click latency [1]. So if you use a low latency mouse over the network, it could be faster than some mice that are plugged in directly.
Wow, thank you for the link. Somewhat disappointed that the Razer Viper Ultimate, which advertises lower than wired latiences, is on the low end of overpriced mice, but as a new owner, the lightness of it is night and day with every other mouse I've used.
It's good but not worth 160 USD. I'd recommend the Razer Deathadder or V2 Mini. Just my 2 cents.
It's still probably well within your acceptable tolerances, but worth keeping in mind.