I don’t know how long it will take. I’m also tidying bits and pieces from the past 13 years and reassembling everything under one roof.
I can only say it should be back up by January 2015. See you then.
EDIT: January: everything is now moved and simplified (cheaper and faster, hoorah!) Vaultpress was handy for the transfer although WordPress itself is bafflingly shit at transferring blogs home to its own hosting platform. So I’m still using a non-Wordpress host but everything is at least under one roof (at Zen UK).