GB
I do it the same way. As you say your aiming point will be your flaring point unless you adjust you aiming point when very short finals.
To land on numbers I aim for them all the way down the approach and then over the threshold when i am sure i will make the flaring point i lower the nose slightly (more a thought than a movement) and reduce power to keep speed. Flare at the appropriate height touch down on numbers! (sometimes)
Don't know how correct that is but works for me and a few other i know.