Then honestly my hint is only to go for a day, from Paris, if you absolutely NEED to go. What I mean is take a room in Paris, and take the train for a day. I often do that when working in Paris. Be at the park for opening, plan to spend most of the day in the Magic Kingdom park, see the Studios, and return to Paris that night.
But a week to cover even a small corner of Germany and Paris and Disney is not enough time at all, so I would not recommend it to a first or second time visitor.
After almost 4 decades and thousands of kilometres I have barely seen half of what Germany has to offer, and I have seen more than most of my fellow countrymen and women. Same with Paris after countless visits. But to each their own.
Also, how do you plan to get from Germany to Paris? I suggest flying - about an hour flight from FRA and 90 minutes from MUC. Taking a train will take quite a big longer from most parts of western Germany. Also, you mention Holland - are you going from there? as your time is very short, flying is most likely the best option for you (depends from where you are coming). Would you fly into AMS and home from Paris? that would also give you some time.