Could you just add a humidifer nearby? And add an oscillating fan? I don't know about all that plastic lifting and regulating but I do know they like fresh, moving air.
I've got my plant stand set up this way to grow mostly Phals and it's been working like a charm. My humidity, here in super dry Colorado, stays only around 45% with the humidifier. I keep the humidifier on the top shelf of my stand. Nearby, I have the oscillating fan. . .so it's not blowing on them constantly but it is blowing across them regularly.
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