I would certainly skip the Vermiculite in the mixture, it is incredibly harmful to your health if you breathe in even a little of the dust. That said, aim for almost half of the mix to be Perilite and the other 1/2 to be your soil(less) mixture. I like to use about 1/2 peat moss and 1/2 Perilite and then add organic amendments to the soil myself. This has been a serious headache for the first two batches while I figured out the right amount to adjust the pH.
Try to use a potting soil that contains no fertilizers or anything else that is unknown to you so you can have total control over what went into the soil, when, and how much. DOCUMENT EVERYTHING! Keep a log that you can refer back to if your soil mix is particuarly good or bad.
If you add some organic fertilizers to your soil mix at the beginning, you can probably skip the fertilizers until the plants are ready to flower. If you do choose to use fertilizers added into your water, remember that less is best! An overfertilized plant will die quickly, and underfertilized plant will simply be a little smaller. Overfertilization will also make the finished product smoke harsh and taste like 'homegrown crap'. Cannabis Culture and High Times both have some pretty good articles on soil mixtures, and dont be afraid to pick up a book or magazine on houseplants at the store. Good luck, sorry for rambling!