Goshen is in Egypt (Bereishis 47:6)!
Refer to 10:41:2:1,2 and the note there.
What is Har Yisrael?
Radak: It is the mountain of Yakov, who dwelled there. It is called on his name.
Why is there a Hei at the end of "u'Shfelaso"? It is masculine!
Radak: We find like this elsewhere, e.g. "Ohalo" (Bereishis 9:21, 12:8, 13:3, 35:21).