Can you teleport outside? Sure.
Is it safe? So long as there's no rain to smudge your diagram it's basically as safe as doing it indoors. And in Lucien's defense there wasn't any rain at all, right up until the last sylabble of the incantation.
Well, the landlords and Bar aren't the same people but Bar thinks it should be okay.
Great!
"So should we start setting this up now or are there other steps we should get to first?"
"I don't want to resurrect any of the Ainur until the Elves are all back, but we could try to get information on dead Dwarves and humans from Endorë and get those out the door and on lightleapers home."
"Well, they first wanted to go between Valinor and Endorë and weren't in a huge hurry to explore elsewhere and then there was a war."
"Well, I hope they get a chance to get around to exploring now that there isn't a war?"
"Not very far, but they're settling within the solar system. Projects to get all the way to another system have been tried but they turn out to be incredibly logistically and managerially challenging and so far nobody's landed on an exoplanet."
"You need to put a lot of people in a sealed environment that can keep them all alive for years and manage a terraforming project at point B. Also, since you can't compel daeva to do things, you need to do this without being able to count on them for propulsion, fuel, or resupply. Also the people in the sealed environment need to not go crazy and kill each other. I think someone will pull it off eventually but there's not even people on every moon of Jupiter yet."
"I know, right? Honestly I'd love to go along with a colony project as the supply demon but whatever chance I had to score a gig of that nature has now... evaporated forever, so."
"Not yet, but like, I don't want to - seal myself in a tin can with a thousand excited generation-shippers and then have them find out somehow, they'd be so fucking scared."