Dude, I'm in the same boat as you, and what I'm doing is just waiting it out. I know its super hard and I struggle with it a lot, but I just remember its only 9 more months, not even a year. I've done what transitioning is acceptable (mostly hair cut and more masculine clothes) to at least be somewhere, and if you've got even just one friend there you think you could trust to tell, its a big help. if you don't, I suggest finding support groups or somewhere that you can be the man you are. For me it hurts to not be able to be Dean all the time, but a little is definitely better than not at all.
Even being on a site like this, for me at least, helps me cope with being female most everywhere else. up until this summer, online WAS the only place I was me, but it helped so much to have that one place.