Just a suggestion, try to build something like the hydro coliseum. You can plant a perpetual harvest that way and always add on. Its known to be one of the best uses of light and offers huge sq footage. Look here to see if your not sure what I am referring to:
http://www.bghydro.com/BGH/itemdesc.asp?iC=HGSCOLRES .
Put one or two 600w in there and your good! By the way cheapest bulbs, digi ballast, and goodies you can find on the net. Delivered discreet 3 to 4 days from click of your mouse standard ground with tracking number email the next day from order. I use them all the time and not once had a problem, some items are 150 to 200.00 cheaper than elsewhere on the net.
http://www.plantlightinghydroponics.com/ Example: I just purchased 2 bulbs and a ballast (dual 600w digital and 2 600w hortilux bulbs) for 480.00, just the ballast cost that at other sites. Hortilux 600w bulbs are over 100 bucks each on most sites, I RANT about this because I see you have a link to those......errrrrrr....stealth hydro .......people and my experience with them almost took me on a road trip to visit them and they are half way across country! Burned my stash trying to stay calm. One TIP= try and contact someone there before you order or try to deal with them.
Back on subject, Look into building a simple wall setup. Say use long bins against the wall with some sort of erect wall support that holds wrapped rockwool or grodan slabs with a simple submersible pump and drip line set up flooding each slab from the top of the slab and flooding and draining out the bottom back into the bin. You can add on and tie bins together using simple flood and drain fittings, and if you wanted to you could also add a control bucket and a larger resevoir.
They now sell extra large reflectors, sealed for cooling, you can use to hang verticaly and cover the wall with light. Keep adding on till all your walls are full and still have the middle of the room to do your attending.
Hope ythis helps spark some imagination, I know its not that clear but if you try to envision it you will find your way. Peace and good luck!
p.s. Think about how much more sq footage you have on your walls than you have on your floor, then think vertical.