Sorry, I don't know the answers to most of the questions, but I bet if you post them individually on this site you will get better responses from some who have more knowledge than me on some of these issues. My docs have not said the high FSH means you will go into menopause early, just that it may be an indicator that you will.
I don't know the answer to the ovulation question, but I suspect the docs can monitor you and give you a trigger shot to make you ovulate. They can make you ovulate during an IVF cycle, so I don't know why they would not be able to make you ovulate during a natural cycle.
Is your doc an RE? Does he specialize in high FSH? If not, I would make sure to switch to someone who does.
Also, I am sorry to hear about your husband's diagnosis. I think there are some invasive tests he can do to figure out if he truly does have no sperm. I think he needs those tests prior to concluding that he has nothing to work with. I am not well versed in this information, but I have seen some information posted by others not that long ago on this subject. You may want to start a separate post asking about this issue as well.