help lighting

hello fellow growers n smokers jst have a few questions for yous i have a built in wordrope in my room witch is 1.7 ft(51cm)x 2.8 ft(85cm)x 8ft(243cm) with small air vent at top i need to now how much light(watt) i would need for this space...

Doing my first grow in a small cubboard and have 1 30watt-117watt cfl, 2700k, 1700 lumens on 1 plant jst looking for some advice on if this will be enough light to grow 1 plant i have another light the same would i be better to put that in with it aswell or would that do...