The number one benefit is that after the dedication ritual you have opened a door and Gods and Goddesses are now actively protecting and guiding you on your spiritual journey. It's also common with people coming this way that we have been guided before the dedication ritual because many of us have been with Satan and others during past lifetimes.
You should not look at Spiritual Satanism as merely something for material gratifications, but more so as an overall developmental system that covers all the bases, including material goals. You should know that material success comes after spiritual success, or aptitude, or "good natal configuration for material goals". In another words, it's written even before you were born, but this can be influenced with spiritual practices during your life (extending into future incarnations). How much, depends on you.
But to say if you are to be a successful artist and so on is a complicated matter and can not be judged by being a SS alone. Many more variables are to be taken into account. At the end of the day, hard and smart work pays off and who knows what you can achieve with spiritual information that is publicly available and also what can be privately relayed to you by your Guardian for example.
