[Ifurita]

It will work for most highlanders and hybrids. You may not succeed with species like diatas, villosa and gang, but I do what you intend to do(normal day temps with AC at night) and it works. You will probably want to try the easier highlanders to see how they react to your area plus be prepared to have to fuss over them a little more than normal. Losing a perfectly healthy 2+ year-old rajah just because of transplant shock utterly sucks.

My personal gauge is that any highlander which doesn't die after 4-5 months in lowland conditions(it can become extremely unhealthy, even to the point where it cannot recover, but is still alive) will survive for me for sure when given AC cooling. If the test plant can't recover, that sucks too, but at least you know that the species can survive. :P