Hello Braiden ^^. I'm on Rabanastre so I'm not sure what the linkshell situation is on your server, however, I found some linkshells with ~50+ members on Melmond. You might want to give them a try (I'm not affiliated with any of them, haha :P). Hope this helps!

-Wipe Masters: http://ffxivwm.guildwork.com
-Fightclub: It shows they are recruiting but I couldn't find a website. Their linkshell master is Sid Vicious.
-Tantalus: http://tantalus.mmoguildsites.com