I want to develop pos machine is this list is right please give your opinion

Hello everyone i want to develop pos machine for that i am choosing these components to assemble please give your opinion .machine expected to be durable and reliable.

  1. Raspberry Pi 4 model b 2gb ram
  2. IPS LCD (50 pin) with DSI connector circuit
  3. Capacitive Touch Panel
  4. Screen protector

Please suggest me the right kit and right component so i can purchase it