Hi Larisa,
It's great to hear you are taking steps to become happier, by challenging your workplace dress code and requesting that people refer to you by the pronouns that correspond to your gender. I wish you the best of luck in those endeavors!
I'm also currently not transitioning, because I don't feel I have the right to, until I provide my mother a comfortable retirement, but also on my death bed I don't want to see my life as pitiable. Thus, since I will never feel fulfilled if I don't transition, I will begin to do so after I address my larger priorities.
Personally, I don't think a non transitioned transgender person can feel fulfilled if they believe that at some point it could be possible for them to transition. What you would have to give up now, may have a greater value to you than what transitioning would provide, but I think if you planned a future where at some point you transition (maybe when your niece and nephew are older), this would add a lightness to your life and put a smile on your face. For me, having an enticing future helps me be more productive and have greater appreciation for each precious minute.
Anyway, I hope you do what is best for you.