How many lumens do I need for a bright room?

Normally, it depends on the space and the brightness you want.

For the Dining room: 2,000 to 3,000 lumens---18W ceiling lamp to 30W ceiling lamp will be the good choice. 

For the Living room: 9,00 to 2,200 lumens.---12W led downlight, 18W Ceiling to 24W led panel can meet this requriement. 

Bedroom: 1,000 to 2,000 lumens. You can choose the suitable stylish led ceiling.