You're more than welcome to join FableUnity, as Siv suggested. Check out the FAQs on our forums - www.fableunity.com
Keep in mind that in FableUnity, the members are responsible for their own success or failure. The leaders may plan events from time to time, but the majority of the LS activities are set up and directed by the members. As such, I'd warn you that there may not be quite the level of structure or organization that you're looking for. The great thing, though, is that there are a ton of people in the LS who are probably working on or interested in helping out on many of the same things you are. As long as you're willing to work for it and take ownership, FableUnity can help you reach your goals.
On a side note, I'm not sure how structured these other LS's events are, but two other fairly large social LSes on Shiva are Black Rose Dynasty (talk to Demcat) and EchoDragon (talk to Ryudoz). If FU isn't a fit, one of these others might be.
Best of luck!