Well first if you think the dog would go nuts, then I wouldn't recommend one. My Sun Conure was rehomed because the prior owners got a puppy, and Both teh dog and the bird went crazy LOL So go with your gut on that one. I've seen cats and dogs alike turn their noses up at birds and not really care one way or the other. Most of the time the bird just learns how to whistle for the dogs and scold them LOL which would equally drive them batty!
Everyone is entitled to not like a certain animal, I don't like goats, somethin about their eyes LOL. As far as their poop being toxic, if your mom ingested her OWN feces she would get sick too, There is bacteria in ALL feces, doesn't matter which animal it is.
As far as time I wake up at 8 everymorning. I cook the birds breakfast real quick, say good morning, open the windows, then leave. I go home at lunch, which its my lunch right now so I'll be heading out the door in a minute, and I check on them since I live so close and make them lunch. Then I don't get to go home until around 5:30 at which the birds are out of their cages from 5:30 until they crawl back into their cages for bed around 9 or so. Do they get tons of out of cage time, not as much as I'd like, but I also know people who's birds only get out for an hour a day so I can't beat myself up over it too much.
It sounds like theres more negative than positive of getting a CAG now while living at your parents, but only you can be the judge of that!