Yeah I guess good enough for first year. And I learned a lesson: they will go dormant even if they get 20C and artificial lights. So next winter I won't even bother.
Thanks for the advice about placing them on a heat mat. I'll do that in March and see what happens. And no I didn't know that pots get much colder. That explains a lot!
A plumeria with no scent is like food with no salt
You should get the fragrant ones too, the smell is awesome. On that note, do you have ylang-ylang trees at all? They also smell wonderful although their flowers only last a day or two. I had one in Bali that was growing like crazy.