i was born muslim but i converted to agnostic , however i have more than fair information about that subject
now there are two major sects in Islam : Sunni (the majority in arab countries), and sheia (the majority in Iran ,Iraq and Lebanon )
in quran there's no mention whatsoever of transgendered people , however there are some verses that prohibit "change in god's creation" (4:119) , and sunnies hence claim that transsexualism is a sin , unliss you were born intersexed (because in that case it's a medical condition , which in my point of view shows a total misunderstanding of GID by the scholars)
in the other hand shia as was said before allow it
and anyway , even if you were sunni , since you started transition before you become muslim then in any sect's point of view your doing nothing wrong , and even if you were in the middle of it you should continue to the end
as for the accepting part , being a transsexual right now , is something that a lot of people do not accept , especially sunnies , so it's up to you to tell them that your ts or not if you pass 100% woman .
good luck