Oh boy, free stuff! Nothing beats "free". You really need to visit a casino or buy a lottery card (are they called "cards"?). You are on a roll.
As I have said before, the later it gets, the more difficult it will be for plumeria to root. I have given statistics, so you know my success rate here in MS. That doesn't mean you should not take cuttings. Just understand that they may not root, so you'll simply be storing those cuttings over the fall and winter months. I do that with dozens of cuttings. Its no big deal.