I somewhat know the feeling, Im currently 6tf 5. Though I dont get asked/remarked about being tall. Most people I speak to are used to it and given my male look strangers would surely be a bit scared, being a tall goth has its advantages XD
I do feel for you since pretty much any heels would make us stick out even more in a crowd(though currently I havn't went out en femme).
Its not just the heels thats the problem I find tho, I find some clothing hard to find aswell.
Last thing I will say however is, forget what you think the world sees you as, try and use your height to your advantage when dressing. Not sure how currently but there will be a way to utilise it.