Hello, hello! I'm new to the game myself, but from my experience, definitely try both keyboard/mouse and controller to see which you feel is a better fit for you. I thought I would prefer keyboard since that's how I usually play MMOs, but for FFXIV I was surprised to find I prefer the controller, so it may not be what you expect.
As for RP, I've made a character on Mateus as well, so I might see you around!
As for RP, I've made a character on Mateus as well, so I might see you around!