What to do on my Zero at 180?

Haven't played Maple in quite a few years, and came back to try out Zero. I'm not quite exactly sure what, if anything, there is to do now that I've finished the storyline. I've been messing around in that new town, commerci? and the boat stuff but, yeah. Any tips on some other fun-ish stuff I could try or maybe some solo places to train would be nice. Everything I've read seems to only list party places.