There may not be a need to rotate or move light if you can get the proper light placement. My latest design lets you easily manually move the light in 1/2 inch increments in an x/y axis and rotate each module about 180 degrees in the same plane.
Each module can also be set up to rotate in the z plane to get the correct angle.

The frame is 2' x 2.5 ' for a 5 square foot area. I will use a 24 volt 180 watt led driver on each frame. I am aiming for 30 to 35 watts per square foot.
I will use 12 modules in the frame in a 3x4 grid. Each module will be in the 12 to 14 watt range and have a quick disconnect plug into the grid framework (Lets call it the motherboard) wiring. Using K2 reds,royal blue and whatever else I have laying around. I may integrate some LED engin 660nms into some of the modules or I may use them (about 40 to 50 watts) as "Boost Lighting" during the last 4 weeks. I am keeping my options open. By using the module concept with only a few LEDs on each heatsink. I can easily subsitute each module for one with a different color ratio mix.

The heat sinks (available through a shop on EBAy at a very good price) are big enough that I do not need to use a fan on top of each. I am going to try cooling the area above the heat sinks with a ducted air current that will also help to get rid of smell. If need be, I will have the flexibility to mount fans on each module.

I am going to start building the frame next week and will post pictures and details.
If anyone wants to get started on one, I will answer any questions.

I have kept construction simple, all materials are available from OSH or HD.
You will need basic tools: A cheapy drill press, but a hand drill will get you by,
hacksaw and taps.