400W HPS Light help

I bought a sun systems 400w hps light for a room that was going to be 10 square feet. Well, I used another area and it has 13.5 sqaure feet in it.

Will my 400w hps bulb be enough light to fill this room with 10 plants? I could buy another and put this in my veg room, but really wanted to just get t5's for clones and veg em with that.

should I buy a 600w hps and throw it in the room with 13.5 square feet and move the 400W'r in the veg room? should I just throw in some cfl's for more more lumens? any help would be much apprerciated....

need help...

a 400 watt will only cover 4x4 and thats stretching it a bit

so 3x4.5 should be OK?

a 400w watt wont do 10 decent sized plants.
a 600w is better for 10 plants tho.
Id stick with the t5s for clones and veg so it'll be easier to keep them short while the others flower.

yeah it will work but for the price difference id go 600 watt

they would fight for light tho