According to 5e rules:
1.) No, because your wild shape isn't "wielding a finesse weapon" [with which to parry]
2.) No, because you specifically "assume the beast's HP" which overrides the Tough HP increase.
3.) Yes, because your wild shape "retains the benefit of any features from your class, race, or other source."
Of course, Larian might have implemented any of the above differently in BG3, but I haven't tested these feats specifically in BG3 sorry.