This is much more interesting than screaming and shouting koyfer at each other. The following is entirely off the top of my head and I am not in sugya.
1- Maybe
2- Definitely. Even if he shouldn’t have inherited, he was koneh.
3- If conceived by to the wife, possibly. If there was a surrogate mother, definitely not. The only question in that case would be bias znus. (is the kid Jewish if the surrogate mother is not?)
4- Yes.
5- Why should she have to wait? Let her get chalitza and be shot of the whole family.
6- Cite please. Need to see inside.
Now to be yotze getting back on topic: Heretic!! Idolater!! Troglodyte!!! 😛