I run 2 x 400 in a 6' x 2.5' space. Just like your talking about....just with 10 plants instead of 100. I'm not comfortable running #'s like that.
I think you will be very happy with what this setup can potentially produce. But, I think you'd be doing yourself a very big favor if you lower the count a bit. I'd definitely remove the corner plants. Based on your sketch, those will be far less productive imo. The overlap from the clones being so close will be counterproductive, imo. My guess is you'd get a better yield, with about 20 fewer plants. (everytime i lowered my count, yeild went up)
At some point, increasing plant #'s will begin to hurt yeild. I think your already over that point. If the pics you showed were from CFL's you can bet that same strain will react different to more intense light. I'd guess they'll be bigger, and have more vegetation...causing some crowding. They will also grow forward towards the light. When the weight packs on, you'll need something to hold them back.
I also think your light spacing was better in the 1st sketch. I'd rather have the ends get direct light, and have the center share the overlapping light. In your 2nd sketch, your taking light away from the ends and giving more to the center. But, your room is 5" longer than mine, so you will have to manage a larger overlapping area.
Overall, I think you'd kick ass with this setup once you find a happy zone. I think that happy zone will be well over 2lbs.
Good luck. I'll be here to watch