Also consider your ping, especially if you intend to do more difficult content extreme or savage. I was doing Suzaku Ex on an alt a few weeks back and kept missing half the directions for panel, and had trouble jumping between two colours next to each other so had to run all the way around sometimes.
It's not fun being challenged by ping as it kinda restricts some of the content you can do.

Tonberry was pretty nice though, but yeah there are plenty of JP only parties and players about and they'll know if you are using Google translate or some alternative.