1)
Is "v'Nozleihem Bal Yishtayun" the same as "va'Yahafoch l'Dam Ye'oreihem"?
1.
Radak: Yes; The matter is repeated - "Ki Lo Yuchlu Lishtos Mayim mi'Meimei ha'Y'or" (Shemos 7:24).
2.
Malbim: "V'Nozleihem