Phragmipedilums: treading into unknown waters

[Halloamey]

Hi all, I finally got myself 3 Phrags, 1) Grande, 2) Sedenii and 3) Schroderae, All 3 blooming size plants but just 2 crowns and a new growth each, so I think it will be some years before I see any flowers. From what I have read on the net and Orchidwiz, all of these will take cool to warm temperatures, but not very bright light, but I am confused here, they all seem to have very light green leaves so I think they need more light. At my office I have North- Northeast window with about 500-1000 foot candles, but at my home I have a east window with direct morning sunlight. What do you think. Maura and other Phrag. experts please help me here.
What I am certain is that they will go into SH set ups soon, they already look a bit dehydrated to me. Any more pointers to the culture are welcome. Attached find their photos from the vendor.

Phrag. Grande


Phrag. Schroederae


Phrag. Sedenii