The problem with being a Buddhist AND a Satanist is that both differ dramatically in terms of their underlying worldviews and assumptions.
Buddhism, like most standard religions, assumes that:
*Humans are inherently fallen and flawed
*This life is not all there is
*This life pales in comparison to the afterlife/the Great Beyond
*Abstinence and temperance are the ways to enlightenment and purification
*The universe is governed/supported by a more-or-less inflexible and straightforward *moral* code. Good is good, and bad is bad, and never the two shall meet or become confused. Those who violate the code are inevitably and predictably punished.*
Of course, to Buddhism's credit, it doesn't necessarily
rag on humanity the way, say, Christianity does, and the Eightfold Path can potentially be interpreted rather Satanically. It also isn't as anti-nature as other religions. And, it is often true that we suffer in life because we have desires that aren't met. But, beyond this, Buddhism and Satanism see the world quite differently at core level.
And, I gotta say, I did rather like this guy: http://en.wikipedia.org/wiki/Ch%C3%B6gyam_Trungpa
But, like others here have said, Eastern religions have some wonderful tools that you can use. I recommend you check out Taoism (especially Chuang Tzu), Wang Yang Ming, Hsun Tzu, and Yang Chu. Don't limit yourself to Buddhism; Confucianism has a lot to offer, too (as seen by the aforementioned scholars), as does Hinduism and Taoism. Mo-ism (which is extinct, and was founded by Mo Tzu, not to be confused with Mao Tse Tung) is total shit, however
*Satanism does maintain that the universe runs on certain laws and rules of thumb, of course, and some of these could be said to be moral. It is also true that those who do not recognize the laws of nature often get bitchslapped. But, where actual morality's concerned, Satanism doesn't take as black-and-white a view as other religions, and instead maintains that morality is contextual and sometimes even irrelevant, and that it is certainly possible for a person or organism to do very naughty or malicious things and totally get away with it.
As for violence, you may not believe in it, but it believes in you
Seriously, I agree with you that there are lots of situations that could be solved quite nicely without violence, and that we should seek out non-violent solutions when and where they will be most appropriate and most feasible. Violence can cause a lot of stress, use up a lot of resources, and do a lot of needless damage. But, sometimes violence is necessary, and other times, violence is inevitable. So, you should never project your dislike of violence onto the outside world, or expect others to share your enlightened point of view.