I rather advise to stick up with that one than updating new gear, as being a beginner, you will do absolutely fine. Even if getting advanced, it will still be fine to keep it than buying new one. Everyone tells to have a better "sim gear"( a new wheel for example ) for soon. Of course there is better features about it, but all what I think is the matter of taste about new wheel. Still I would stick up with my advise. As just started, you probably just want to reveal the fun spots in LFS in first time. When it gets wearing off, get to the new challenges.
A bit off topic, but as for both LFS and LFS Community, there is benefits and bonuses.
Basically, you can add any controller for LFS, as bbman replied above.
Anyway, welcome to LFS. Have fun and get some practice (and more practice) and start to beat those LFS-Superstars.