Sleep - Self soothing and/or moving to her her own room - which should come first?

[vickersnickers]

My DD is 5 months old and doing a good job of sleeping (typically needs two feeds a night, one at 2, one at 6 having gone down at 7/8 and sleeps on till 8ish). I'd like to move her to her own room as it would be nice to let DH back in from the cold (spare room) where he's been happily snoring through the night since she was born). Trouble is, she currently has to be asleep for me to put her down and I'm not sure which to do first, self soothing or moving, or do it all together for what, no doubt will be a horrific few weeks. Added to which we live above a pub where sound travels terribly which is the excuse I've been using for not introducing self soothing up till now. It's not going to be good for our customers to listen to cross DD upstaires wondering why the hell I'm not picking her up and she's not going to find it easy to settle when she realises how much noise is going on when she's not asleep (currently she's buried in my chest somewhere comforting and sleeps adequately to get into deep sleep without all the numpties downstaires waking her up).
I realise there are many issues going on there but would appreciate advise!

Have you tried self-soothing at all? Will your DD do it at all? What does she do for her naps?

I feel your confusion though! This is a difficult one to decide on. IMO it would come down to two things - 1, In her own room, is there somewhere you can sit comfortably to soothe her to sleep? and 2) In your room, is there somewhere she can fall asleep without you? If there is somewhere in your (familiar) room where she can start learning to self-soothe then I would be tempted to go with that, with perhaps some of her naps in her own room so she starts getting used to it.