new orchid order!!! humidity?s

[skyheaven]

Hello I just received my oak hill gardens order. Very happy. They are cute little babes. Now the hard part keeping them alive and happy. So i set every thing up. You can see from the pictures how my set up is. Humidity troubles!!! OK so I have clear bins in my east window one foot from the window with some Paphs to block the direct sun. I put small 4" baskets in the bin upside down they have slots on them. I put the seedlings on top of the small bins and added 3 gallons of water. Which raised the humidity to 52% so then I put a humidifier on for two hours which raise it to 63% OK my questions are.

Is this enough humidity?

How can i raise it higher?

How long should i leave the humidifier on for through the day?

Should i fertilize them? or leave them awhile till they grow bigger?

I would love to hear any comments you would have for me. As I am a new beginner with seedlings. Any info you could share iam quite sure it will come in handy.