If you can use her well, do Kitty. If you can't, do Apoc.
I wouldnt r4 a champion unless i was very confident on my ability to use themI'd hold off, do some real content testing with kitty and find out if you like her style and can play it well, and if so then there is a decision to make, but maybe that process makes the decision for you
I recently got her and I don't think she will be hard to play, compared with quake or tigra I guess she is easyest to play. If you are great intercepting you have all you need to play properly with her.