need some advice

Im helping a mate doing a room.
It is 3.4 by 3.4 metres 2.5 metres tall.
Just wondering how many lights and plants could go into a room this size, as for air flow im good with doing that just not to sure about how many lights would be need to run a room this size.
any ideas would be great

How many plants depends on your style of growing and how big you are planning to let them get. You can put four 1000 watt lights in that room.