As far as the cards go, from the images provided they look authentic. The E91 sets were all machine cut...it seems possible your cards were hand cut from a sheet?
And of course it is blasphemy in my soul to try to make them more even. They were not strip cards, designed to be cut into individual cards. I think the way they are helps document their prior sheet existence.
As far as grading, I have no clue.
Just be glad they don't look like these E91C Boston cards I formerly owned:
e91boston510.jpg
e91boston511.jpg
Brian