Mardy,
You had no control over the death of your father. I know that it will be hard to let go of his passing with the unfortunate timing, but give it time and it will happen.
Yes, it would have been better to have waited, but it was not under your control. I agree with your decision to attend the funeral presenting as a male. It was respectful of the feelings of your family and your father's passing. It would not have been good to move the focus of the funeral from dealing with the grief to dealing with your transition. Your actions were respectful of others and that is always important in life.
Be happy for the acceptance you are gaining.
Hugs,
Joanna