Why did Yakov ask that his wages be these kinds of animals?
Tosfos ha'Shalem (32:5): He saw with Ru'ach ha'Kodesh that such animals represented the kingdoms that would subjugate Yisrael (Zecharyah 6:3,6), and he wanted that [Yisrael] should be able to conquer them.
What is "v'Ansah Bi Tzidkasi"?
Tosfos ha'Shalem (1, citing R. Yosef Karo): Whenever Aniyah is followed by the prefix "Beis", it refers to testimony.
Ohr Zaru'a (1:769): I know that Hashem will bless my portion.
Malbim: Hashem's Hashgachah will show what I deserve. If many are born like I specified, it is because Hashem saw that I worked faithfully and deserve much wages.
One should not aggrandize himself about his future righteousness - "Al Tis'halal b'Yom Machar" (Mishlei 27:1)!
Tosfos ha'Shalem (2, citing Maharam bar Baruch, from Bereishis Rabah 73:9): Indeed, Hashem rebuked Yakov for this - in the future 1 , Dinah will be afflicted (due to Yakov's sin! Refer to 32:23:1:1*.)