topping the 5th node should limit that to managable - then by placing a garden lattice under the chambers tying down will be easy. using 430W son agros (x3 in an 8'x14' room) you can max your lumens, using light movers would allow you to get as close as possible w/o burning - compensating for the lower wattage. the only thing you should have a slight prob with is venting (i took a tip from Lord LiteSpeed re a small fan over the tops of my seedlings and my 175WMH is just a few inches from the tops hopefully i can get as close as 6-10"). i chose the son agros because of reports that say it is THE most efficient bulb available and the only light needed as it is higher in the red end of the spectrum than other MH conversion bulbs(3 would run at almost 1.3Kw and after 4 mo this # would go down as then your flowering 1/2 of the crop and your energy consumption would go down by 20-25% because of photoperiod shortening). now mind you my field is outdoors this is my 1st time going hydro but i am just amazed at the results thus far. until now ive never seen 10 day old sprouts w 5 point fan leaves!!! either way by applying the above i hope to obtain SOG results with a much smaller volume of ladies . you see i sufffer from serious chronic pain the only relief i have ever obtained was from from cannabis. finally the law allows me the right to grow a limited amount of PLANTS im hoping to learn from ALL of YOU how to maximize this opportunity so that OTHERS who need it can also have it even if they arnt making 40K a year . am ashamed when i walk into a club and see prices at over 400 an oz because i know that the poor feel pain just as much as the rich