yea ... th'll work .. there even a cfl forum topic here somewhere ... lots of success has been had with cfl grows. however, the results are generally of lessor quantity and quality than the more powerful hps or mh lights. good luck .... Walk on!!~~
You didn't mention what colour temperature your bulbs are. For flowering you really want 2700k, and 6500k for veg. A mixture is good, say 2-3 2700k to every 1 6500k for flower and vice versa for veg.
You've got nigh on 300w for 2 plants, I think you'll be ok. A more accurate measure is the amount of lumens, optimal levels are 7-10,000 per sq ft of plant. The sun gives about 10,000 per sq ft on a clear summers day.