I love the British pronunciation of
Deborah a lot.
Deb would be my preferred nickname, I think it's really chic. I love the idea of a cat named
Deborah.
Deborah Vivian or
Deborah Vivienne is a combo that seems to really speak to me.
Of your combos, I love
Deborah Valancy (that's a new one for me!) and
Deborah Celine.