Let me suggest cockatiels as a possibility. They are bit more robust and tolerant of mildly cool temperatures than most of the parrots. At 50 degrees they just fluff up a bit more than they do at 70.
I don’t get this “avoid drafts at all costs” - these are animals that fly at 40 mph, moving air going past them is not instant death. I’ve got one cockatiel who insists on perching directly in front of any fan in the room, perching on the fan if need be. He loves getting his feathers ruffled. What’s important is that the bird be able to get out of drafts when it feels a need to do so.
Sleeping areas need to be draft free, which is why covering the cage at night is so often recommended. Covering/enclosing cages, or providing a nest box to sleep in, not only gives the bird a draft-free sleeping area, but allow the bird’s body heat to warm up the small, enclosed area to a nice, toasty temperature. Wild birds do sleep in holes (or, lacking hidey-holes, bunch up together) for protection from the elements and warmth.
But a bird out running around, playing, climbing, and flying doesn’t need to be protected from every tiny draft. If they’re out and about and get uncomfortable in a spot they’ll move. It’s when they’re confined in a cage it becomes more important. You also shouldn’t put a cage directly in front of a sunny window as you don’t want the birds to become overheated, either. My birds will bask in a window, but when they get uncomfortably warm they’ll move away from it if they’re unconfined. If they’re in a cage, though, they can’t.
When birds are given outside-the-cage playtime not only should windows be closed they should be covered because birds don’t really “get” clear glass and will smack into them. A light curtain, blinds, or a thin piece of cloth is sufficient for this. Mirrors also need to be covered, as birds think they can fly into them.
I would avoid the use of air fresheners and teflon cookware if you get a pet bird, there are too many cases of those being lethal to them.
Unsupervised birds outside a cage can cause damage to houseplants (and some types are poisonous to pet birds), furniture, books, and anything else they can get their beaks on. Birds chew, it’s instinctive. Give them stuff to chew on and keep forbidden stuff out of sight. (Aside from severely clipped birds they can fly, and even clipped they can climb, you can’t put stuff out of their reach).