There is nothing in feng shui, the key is to see the feasibility.
1 Rebuilding the water, electricity and natural gas pipeline in the kitchen can be changed or not. There are no hidden dangers. How to install the range hood, how to connect the sewer, what is the electric well or air duct behind the wall and so on. You should think about this first.
Do you think it's appropriate to change the kitchen into a bedroom because many pipes are common, and you can't tear down the bedroom and keep these? I think it is better not to change.
The kitchen itself is not big, 1.5 meters wide and 3 meters long. It is difficult to change it into the last two changes, which is not beautiful.