They get along fine! The new rollers will need their own coop, just because they can eventually get let out. It's a 2 month process though before they can fly here in their new home.
I feed them the same wild bird feed that I feed the wild birds in the feeders...so no extra expense.
They aren't noisy...just a lot of cool cooing going on, especially when they're happy, or excited, or just because. I find the cooing very relaxing...like a cats purr. Maybe I'll take the camera and make a pigeon noises video next time I feed them.
They're pretty tame because they were being groomed for show. Every night if they stay out past dark I go out, pick them up, and put them to bed.