I will try to answer all your questions.
1 For an income to be taxed as an income of HUF there needs to be 2 coparcener but since you have a daughter and after some amendments she will be considered your coparcener and you can create an HUF.
2 I don't think you should provide such professional services via HUF because in case where personal expertise is required in many cases such income has been taxed in the hands of individual rather than HUF.
3 your sister would be included in your father's HUF even if she is married.
4 If they are ancestral property they can be easily transferred to HUF but if you are going to transfer the property purchased by yourself to HUF without consideration then rental income earned by such HUF would be taxed in your hand, however if you transfer it for proper consideration it would be taxed in hands of HUF.
Hope you find the information helpful if you do please rate it 5 and provide your valuable feedback for my improvement.
Thank you