1)
How will they seek Pnei Hashem?
1.
Malbim: They will pray.
2)
Why does it add "u'Levakesh Es Hashem"?
1.
Malbim: They will seek Hashem the cornerstone of Emunah or Elokus.
3)
Who says "Elecha Gam Ani"?
1.
Radak citing Targum Yonasan: They will say to one another. Malbim - this shows that they are all ready to go.