i'm doing my first vert with a 600 in a 5.5 x 5.5 room and well, there's no room left and i'm in 4th week. i'd like to run 2-600's and am thinking i will need at least an 8x8 room to get around a little bit, maybe a 10 x 10. what size rooms do you run in and is there plenty of elbow room to get behind all the plants? i'm crawling on the floor under the light now. i'm hand watering but will be setting up a drip system although i still need to get to the plants for inspection n such. thanks in advance.