Need Advice for New 3-Floor Smart Home Construction Using KinCony Controllers (Nepal)

[jitendra]

Hi everyone ❤️,
I am from Nepal and will start building my new house this month. another controller, which is best for 2 floors, there are many channels needed for 50 channel need for 2 floors  
I already have a KinCony AIO controller and would like to plan the smart home wiring before construction begins.
I have attached my floor plan. Could you please suggest:

• Best switch type (momentary/dry contact)
  
• I want to bypass the switch also 
  
• I place the floor-wise DB box and want to install it 
  
• Recommended sensors (presence, motion, door, water leak, smoke, etc.)
  
• RS485 wiring recommendations
  
• Any important things I should install now for future expansion
  

Any suggestions or examples would be greatly appreciated.
Thank you very much! ?
Jitendra
Nepal ??
By the way, I lived in Japan. If any person from Nepal wants to import easily,