I think that you should keep the names between you and your DH. its not your MIL's thing to worry about, your kids you name them bottom line!
Anastazja Jade is lovely but i like the spelling
Anastasia a lot better. The zj looks quite strange in
Anastazja.
I like
Charlotte or
Carley Jade too there very nice. :) ( I would go with charlotte and the NN carley becasue im named
Carly and i really dislike my name.)
I like
Emerson, Micha and
Emery. What about
Emerson Micha?
And Congrads on twins!!!!