This sounds like a good idea, although as you said, it will be complicated. 🙂
What I would do first is to write a list listing all of the pros and cons:
Pros:
1: They would be closer to you, so easier access, and yay, neighbors! 🙂
2: It would be easier to clean.
3: More space is always good.
4: Easier to get them out in case of emergencies.
Cons:
1: Summer heat is the worst for buns. I wouldn’t be worried about winter, for they would be indoors so less cold, and they like cold. Well, ranges from 45-75 Fahrenheit, but you said you were getting AC in that room, so that should make it a good temperature.
2: Dogs, cats, they can scare rabbits. I wouldn’t be worried about them getting in, for you could just leave a sign on the door saying “Close Door, don’t let dogs in” but, barking can scare buns. Do they bark often? Are they big dogs? Do they like to scare your buns? If they do, then I would say it would most likely be best to leave them where they are at.
3: It could affect your band practice and other things you like to do in that area.
And 4: Your mom wants to make it into a classroom, and you will need her support to make this work.
The pros and cons are evenly balanced, I’d say. What side do you think is better? Did this idea jump out and say, “This is the right decision” Or was it more of a, “Oh, we could do that!” If you feel strongly and surely towards the “This is right”, and you have worked out all of the problems, then I would say we could make this work. 🙂 You could sit down with your mom and talk about what you want and what she wants and find a solution. We are here for you to work this out, don’t be afraid to reach out! 🙂
Wishing you luck, and easy thinking! 🙂