How Many Lights?

[butterfly_muse]

Evening, all!

I am looking to purchase some of Ray's LEDs to grow my guys under for fall & winter, but I am not sure of how many I will need. I presently have one dendrobium, one beallara, three cattleya hybrids and five phals - 3 mounted and 2 minis in pots. I was not sure whether I could mount the LEDS up higher for the tall plants (dendro & beallara) and then have the cattleyas in front of them? Or if they all need different amounts of light/need to be father/closer to the lights.

And I wasn't sure at all where to put the phals since two of them are in pots and the other three are mounted.

I am also unsure of how to go about determining how far away/close to place the plants to the lights.

Any suggestions? Thanks in advance!!