Hi there,
Let me make you clear of some things which you require.
I Prefer Premiere Pro and I can make a bit more accurate of the preview or your software as like it originally shows, from the video you posted as a sample.
Also I'll submit all you need also in addition, I'll give you future support in this project anytime you need for future changes.
I don't know basic German but I can translate and should try to understand, but If you can help me in english If I don't understand anything will be great.
Last thing, I'll finish it before Tuesday, mostly I'll take till Monday so that you can have one more day for any kind of safety.
Moreover, I'll understand and have enough experience for make it fast and you'll get me for quick turnarround.
Regards