need help with veg lighting for babies

I want to veg my babies (still in cups) under cfl/long fluorescent bulbs. I have 60 plants, just transplanted from cloner.

1. How many bulbs do I need
2. What wattage should I be using

I would use a 4' t12 2 bulb shoplight...15 bucks at ace/homedepot...save you money and energy