there is no specific "trader" section, there is a soft power application and a digital nomad application which is broken into workcation, freelancer and remote worker.
Just bring all your documentation, they basically just physically go through it, as well be prepared to open your banking app and show proof of funds, they ask a few simple questions regarding your application and plans
there is no 7 day window, there is a 21 day window, and that window is to report, not to skip reporting. You can report in person up to 7 days after the due date.
It doesn't hurt to combine all your passport pages into a single PDF, you can combine those pages into one of the other documents that you need to upload, because they may ask for it anyway and yes you don't have to stay in one hotel.