I was always obsessed with long hair as a child and when I transitioned I spent years growing it out. It finally got pretty long as seen in this pic:

Then I went through some relationship issues that eventually led to a breakup causing a quarter-life crisis which compelled me to cut off most of my hair. It was a very freeing experience:

In terms of attracting guys, I had no problem doing so with shorter hair (though many men have told me they prefer long hair). And in terms of passing, I don't really think it made a difference. Masha, you pass extremely well so I don't think you would have a problem with a cute shorter cut (though I never went full pixie and can't vouch for that).