Personally, I think you could get more accomplished if you didn't advertise that you were a Spiritual Satanist to the establishment or members of it. You need to try to read and understand everything on the website. There are many things you can and should do in addition to regular rituals. As for disturbing the spiritual energy they create, being noticed and attacked by something; I don't think so, but I honestly don't know. I don't know if you'll capture the attention of say, a Grey but I'm not sure. I had a friend that lived next to a half way house for transients and such and they had all sorts of spirits wondering around their house. I don't know if it would be the same in your case. It's no big deal either way though. The stuff you'll learn on the website will handle all that and then some. If you're worried about it, focus more on studying the website, until you have more confidence in what you can and should do.