Power strips with surge protectors are evil. As @Chris says, you want at least separate outlets on opposite walls. Better, have separate ganged (4x or 6x) boxes on all four walls. Extension cords and power strips are not what you want. Extension cords laying on the floor are begging for someone to trip over them and fall, or catch them and pull it out of the wall.
You have to be more specific on what you plan to do. Shooting with strobes (small flashes) or studio monoblocks or professional pack and head systems all take different amounts of power.
Continuous lighting takes more watts than flashes. I've got two separate circuits in my garage feeding four quad outlets each. Of course, you can't draw huge amounts of power at the same time, but having extra outlets let you plug in a bunch of mid-power things without needing to plug and unplug them, or a lot of tiny power things like battery chargers.
Also, in a photo studio, you do not want fluorescent lights. They cast evil colors and strobe at the mains frequency (50 hz or 60hz) that can really mess with exposure if your shutter speed is less than twice the frequency (1/120 for 60 hz).