I would go for the monogram Noe and the Black Epi petit Noe.
Reason: I think the monogram Noe is an absolute classic. And the vachetta on the bottom part of the bag is beautiful. This is exactly why I don't like the Petit Noe in monogram. I can't see the idea of putting vachetta just in the bottom when it's not visible on the side.
Therefore I will choose the Black Epi for the Petit Noe.
I'm 5'3 with a medium frame, will the regular sized noe overwhelm me? I want an epi instead of the monogram w/vachetta. I'm planning to use it as a bag for classes.
I have the petit noe in classic monogram and the MC noe in white. They are such great bags that I am considering the larger monogram noe. (I am 5'11'').