We moved E at 28/9 weeks IIRC and all was fine.. She slept through the first night, and we only really get "up and downs" when she is ill/teething. She was sleeping very poorly in our room, as I was constantly disturbing her, and the "last straw" was when I had a cough and kept waking her, then we decided it was in her best interest, although I hated it.
Smashed crab - E had stopped night feeds when we moved her, other than the odd one during a GS/when she'd refused the bedtime bottle etc. We'd had about 3 months of no feeding before we moved. She did sleep better in there, but all night perhaps would be a bit of a high expectation I recon? We have a monitor, but don't need it. I can hear E roll over, stir etc let alone scream. She sleeps on the adjoining wall though.. So we're against it in our room, and her in the next room against the same wall.