Is there any specific need you want to be on the radar?
Be careful with that, depending on how much free time you have, spending time getting yourself better known might eat your music-making focus.
Unless you want to make music be your source of income (which is harder than just getting well known), I say you shouldn't worry about exposure and focus on enjoying making music.
If someone ends up liking what you write — that's a bonus.
Participate in events and toastbeard because it gives you deadlines that help you hone your skills. If that event ends up making you better known — that's a bonus too.
It's a win/win.
I think that ability to write good music is more important than the size of fanbase.