Do you like these names?

Hi
I'm Megan and i was wondering do you like these names for my twins, when i have them i will have 6 kids!
my other kids are Emma Leona, Tamzin Grace, Isobel Marie and Shaun Edward, do you like them.

I was thinking for my twins (male and Female) Vanessa-Ann and Roy Douglas?
I also like for girls:
Violet
Charlotte
Karen
Justine
Jane and Kathleen?
and for boys i also like:
Casey
Adam
Max
Oliver
Jerry
Charlie and Ryan.
Can you give me suggestions?

Megan XXXX