Hi Rishab, You can avoid creating 4" false ceiling and create 1.5 / 2" false ceilings just to let the wires hide and run within the false ceiling. I will not recommend conduits or exposee ceiling unless you wish to do a rustic interior design. You can go for Surface mounted lights and track lights. They are beautiful and are available in different shapes and sizes too.

I dont think u can use this golden laminate sheet on gypsum ceiling , i m not a expert though. In the ceiling of one of the room i have used mdf sheet and used the same golden laminate to highlight the border.

I Understand. That's a common concern with my clients. But if you choose to have a 3-inch false ceiling, it will not kill the height. you need a minimum of 3 inches for the electrical conduits to pass. And as for the unhygienic environment, it is only created if you have a tray ceiling for cove light. If you install a plain ceiling after a thorough cleaning, there will be no hygiene problem. I hope this helps you all the best

Greetings from Aura you have two options here go for indirect wall lights or wall lamps direct pendent lighting from slab point would also look good many ceiling lights options available suitable for no False Ceiling wall lights are always better it creates ambience.