Hempgirl - compacts would probably be ideal for your space, try and get the 150W equivalent bulbs (26W) to pack more light into the same number of fittings. I don't know the lumen output for these compacts...maybe if Harrads around he'll jump in with that info, I'm sure it's tucked under his hat somewhere
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How big are you going to let the plants get in there? If there going to be getting big and bushy you should put some on the walls too as penetration isn't great.
Hope this helps