Good, so then you will keep the dog? If so I am glad. Maybe bf can help with the dog or take it should it keep stressing you. Did anyone ever suggest crate training? Its a great way to housetrain a dog and keep your home safe. The methods some suggested that you listed above are rather cruel.
I am also glad you have an appointment and maybe it still would not hurt to talk about anger and also the stress and frustration you have had that lead to the rage you mention. Wishing you the best