Is it hard to grow a stanhopea at home?

[irrka]

I've been drooling over pics of two stanhopeas on Oak Hills site--wardii and nigriviolacia . How hard are these plants to grow in relatively low humidity (at least in winter) and NY temperatures? Is southern exposure at this latidude enough for these or would they need supplemental lights of some sort? How big do they need to get before they flower? how big do they end up in general? ugh, i googled and googled and got nothing concrete. please help?