Had you a look at the thread I linked? In it, contains a description of how sex/desire is used in the Vamachara.
I had spoken earlier about Vamachara from a perspective of 'academic interest,' now to speak of Vamachara from a point-of-view of its practice, we should first acknowledge that you need not have a religious 'justification' for liberal sexual attitudes, consuming psychotropic substances, eating other foods, etc.
If we do these things in the context of Vamachara, it is not to do them itself, it's to channel our desires towards mystical experience through the consecration of transgression.
Proper Vamachara holds the principle of Ahimsa as central: indeed the greatest of all the 'arcane powers' is Ahimsa: harmlessness to all, benevolence to all. These things should never be done in a way that endangers or harms others.
Vamachara is a path that demands considerable knowledge/study and practice in order to work. It's simultaneously highly disciplined and undisciplined/spontaneous.
It should not be undertaken solely because one has a desire for sex, psychotropic substances, other foods, etc. These desires are indeed an important part of the practice, but they need to be coupled with the knowledge and practice that together constitute vamachara.
So, without significant further investigation on your part, it is much too earlier to recommend you Vamachara.
You may wish to read the Aghora trilogy by Robert Svoboda, it's an excellent introduction to the vamachara, written clearly and simply and makes for good light reading. If you don't mind reading e-copies, I can send you the pdfs.
Otherwise, Hinduism itself has many liberal/permissive strains that would fit your needs besides Vamachara, and you need not actually commit yourself to any particular -ism. I would suggest you consider religions to be as raw materials, like ore: host rock mixed with various amounts of precious metal; some religions contain more truth and useful praxis than others.
Mine them, smelt out that which you agree with, and practice it. Or, as revoltingest suggested, remain an atheist - there's certainly nothing wrong with reverence for the truth.
Actually in general I have more trust in the ethics of atheists than I do of religious people, including my coreligionists.