Hey NeoNJ, I'm here in Jersey as well, not that far from you. I currently have 7 masdevallia that are doing well for me here on a rack with a fluorescent light on them for 8 hours of the day. I have them potted in 2.5" clay pots with straight sphagnum. My bedroom (where I grow all my orchids) is constantly between 60-70% humidity (second hobby is fishkeeping, thus the cause of high humidity) and I let the plants dry slightly before each watering. Temps hang around 65F.
I haven't seen any blooms but the plants (both species and hybrids), but they do put out new growth well.
I've gone through about 15 masdes and experimented with conditions such as light/ watering/ fertilizer/ etc. If I were you I'd start with some potted plants. Repot them upon arrival into small clay pots with straight sphagnum moss. Masde's hate foul medium and mine seem to appreciate a good repot once the medium begins to degrade. Set your plants somewhere away from drafts (such as on an end table or counter directly under a light source) and let the plants dry slightly before watering. I give mine a shot of Gro-More 20-20-20 Orchid fert every other watering. I feel the key is never letting the plants get "wet" or bone dry and to also keep the humidity up. I keep mine moist and water once a week when the medium just begins to feel dry midway down the pot.
Best of luck!
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