Isn't the answer to most of those questions that the answer has to be 'it depends on what is negotiated'? How are ordinary citizens supposed to know answers to questions that haven't been asked yet.
Also, the fact that we left is what has put us in a position where we would now have to negotiate. We did have a very good deal before, and it is most unlikely that going back in having shown that we are weaker without the EU will enable us to get back what we lost.
Not only that, any article that starts with the term 'Remoaner' is clearly biased and disrespectful, so I wouldn't trust the premise of anything in it.