Is Paphiopedilum Delenatii okay for beginners?

[King_of_orchid_growing:)]

I'd hesitate to grow this species down to 40 F - 45 F, (which is what I define as the mid range of "cool temperatures", with 36 F being the lowest end of "cool" and 49 F being the highest end of "cool" as it approaches the low end of intermediate temperatures). I just don't trust that it can handle this. There's a possibility it might, but the probability of successfully growing this orchid lower than 50 F long-term might not be in your favor. 50 F is fine, but any lower, and you're pretty much testing the plant's limits. If you've got the guts to try growing lower than 50 F, then go for it, just know that it might not work out well. If it's not necessary to, then I'd go with 50 F as a low because it's already known that this is a low end temperature tolerance.