As a closet dresser myself, my answers are this
1/ Hide what you can, where you can, as most of our underwear is flimsy it can be folded small, I am lucky as my wife is much shorter than me and cannot reach as high as me.
2/ To make your body more feminine then you will need breast forms and maybe hip & thigh
pads, you may find Gaff pants a help, but I’ve never tried them myself so cannot verify that.
3/ As for the name, myself I jiggled with my middle name and came up with it. I have not given myself a surname (Perhaps ” Bum look big”) may not be the best idea. I am sure most of the girls on here have done the same sort of thing.
Feel free to chat