Yes, enough growth, but not too much for the space and estimated time. I've used one 250 watt cfl in the past - still have the bulb and fixture, but didn't get very good coverage beyond the middle area. now use 105 watt bulbs per foot, so 3 in the 2 x 3 and 4 in the 2 x 4. Both these are normally my veg tents, but just didn't feel good about the annual back deck chuck after losing most to early rains and mold last year.
The other benefit to the 105 watts, is the flexibility to turn some on / off, or stagger them at various heights. I've used those tents for the final days of l o n g flowering plants so others could access the bloom tent.