Ooh I've always wanted to try Space Station 13 RP. Welcome to RPG!
It's totally easy to get into tech wise, you just got to install the BYOND server software.
In my experience though. If you want a good RP time, try to hone into a RP server of some type that got more than 8 and less than 25. That tends to be the sweet spot. Less than that and it seems to drill into a small group that rarely see each other OR more than that, and it quickly descend into chaos where you can't find a way to stand out and really, make your character matter.
Possible though for both cases. Not a solid rule. Just unironically beware the clown. Not because the clown is a japer, but because the dude in control of a clown is eight times out of ten a dick head, not RP'ing and meta-ing and being smug about it. There's a reason most sec just home in and normally beat him to death as soon as.