You might regrow some of the lost hair, but the drugs are far better at maintaining what you have than regrowth, so don't expect to. If it isn't noticeable yet then I would really advise you to try and stop worrying. You've caught it early and you do stand a good chance of putting a halt to, or significantly slowing, the hairloss.
I am assuming that Sebolac is the shampoo commonly known as Nizoral, which is a mild anti-androgen. It's good that your derm knows about this. Studies and anecdotal evidence suggest that it can help. There's no reason why you shouldn't use regular shampoos on the days when you don't use that.
Not sure about the minoxidil - I haven't tried it.