Welcome (back)
I think you should try a strand test to see how much of the black you can remove without wrecking your hair. You might be able to lift the colour enough for orange but dark red should definitely be doable. Have you found any examples that you like or don't like? You could take a look through the gallery if you haven't already and that might help with ideas.
I think a pink-toned red is going to look best. If you bleach your hair lightly it should lift to a dark orange-red colour. If you use a pink-toned red on that it will look more like a neutral "red red". I hope I'm making sense.
I think the only thing to look out for other than breakage is that you don't over-bleach the roots - otherwise you could have bright pink roots and dark red ends.