Just a quick ?? I have 2 250W MH & 2 110W VHO's in my DIY canopy I had to run the VHO's down the middle of the reflectors for the MH will that Be a problem?
The heat from the halide lamps will reduce the output and life of the fluorescent lamps if they are too close together. If a configuration that keeps them further apart it not possible, personally I would at least try to use some fans to help alleviate the problem.