Cmh led combo for 4x6.6 space

Hi everyone my current grow is 3 plants under 2 315 cmh in a 4x6 i would like to do 6 .im thinking of adding either 2
135 hlgs or1 240.or should i just add another 315 what do you think is best

The two 315 should be fine but if you can keep the temperature down then I see no problem. I’ve ran a 315 with 2x 300w cobs in a 2x3 tent with 1 plant

I really like the idea of using different types of lights and moving the plants around so they all benefit from each of the lights different light temps. I don’t know how much of a difference it would make if any but it sounds good.