It is not recommended to game with a trackpad. We do recommend purchasing either a wired or wireless gaming mouse which will greatly improve your mobility in-game. If you’ve ever tried to play a competitive FPS game with a trackpad, you’ll know just how badly it affects your performance.
In terms of the keyboard, you’ll likely be fine just using the laptops own hardware. Razer laptops have keyboards specially designed for gaming and their small form factor is also a huge benefit.