I have taken several courses of accutane, and while I saw good results they were relatively shortlived and certainly not without adverse, possibly longterm side effects.
If you can wait, I recommend that you wait. Knowing what I know now (I am 31 and still dealing with serious/cystic acne, and I first took accutane when I was 19), I would have explored other options first. I can appreciate what you are going through - the solution it seems is so easy with accutane - but it really may not be worth it in the long run.
There are so many possible causes of acne, such as, to name only a few I have recently discovered, congested liver, digestive problems, systemic candida, adrenal gland abnormalities, human demodex (mite), and gluten intolerance (barley, rye, wheat, etc).
You'd be better off if you can take charge of your own health, educate yourself, and get what you want and need from doctors. They won't - not necessarily because they are bad people - look into your problems with great depth; only you can do that. You, on the other hand, know yourself better than anyone else and have the most to lose and gain from any possible treatment.
What I've mentioned above by way of examples are not treatable with accutane, and accutane will not only mask the underlying cause (that will invariably return if that is in fact the cause) but it can, I believe, harm you by preventing your body from purging itself of toxins through the skin (incidentally, the bodies largest organ, intended primarily to do just that: process toxins).
So, if you can tough it out for a number of months to do some good resarch, ask some hard questions, and take a few tests even, and try some of the more natural ways to deal with the possible underlying cause, you might just surprise yourself. You'll be better off for it.
Besides, there's no harm in adopting a healthy Diet and cleaning the body of toxins. You have nothing to lose and everything to gain!