Most of what you've mentioned are contrary to any electrical codes (NEC) that I'm aware of in the US. I'm intrigued though how are you feeding a "power box" with this I'm imagining something yellow in color from a job site, which I'm guessing further your feeding from a range or dryer plug. So just to put your mind at ease any inspector would red tag the whole setup should they happen upon your electrical distribution improvisation.
Any cord utilized for powering anything is deemed temporary usage only.
And as HB mentioned the temp cord routed through the house is a big Fire Code violation and its presence is an added hinderance should anything catch fire, (which happens more than you want to believe) and you are trying to escape with yours and the lives of anyone living with you. Not the best idea or scenario. I'd suggest to scale your expected grow to something smaller, and maybe contained in one of the small growing cabinets. Expand when you can do so without subjecting others to what could turn into a very bad situation. imho. Peace