If I am allowed I'm just going to drop some stuff.
I think maybe finishing the course, so at least you have the qualifications, then marriage or even marriage while your doing the course, then at least you'd list have the qualifications.
Maybe you could work in a place and speak to the people on top and tell them that you can only work with females, or maybe you can move countries to somewhere where they would understand your position? Again you have to remember that the obligation of bringing money is upon your husband, so you insha'Allah will be able to afford turning down male clients based on this.
The teaching thing, I think that's an amazing thing, because think about it fundamentally, in one job you help a person out for a short while, you might not see them much again, its only a small time to make an impact on them, as a teacher you'd be able to teach children, to help them understand the right from wrong and to be able to be someone for them to look upto and turn to you if they need help, though I would personally encourage you to work with really young kids, to avoid any type of 'boy attention'
Anyhow, mashaAllah it seems like Allah has given you a good chance for education, I hope you make the most of it either way.