I hope Sex and the City was good, and that your cold is starting to clear. You definitely don't want to lose your voice for the concert- that would be a nightmare for the whole of choir-dom!
Sounds like you've got the financial side of things under control (and WOW- great advice you've had!). I loved the top you're planning to wear, and the idea of putting them with some black jeans. Have you guys arranged where you'll meet? Remember to keep it light (and if that's tricky, neutral at best). Focus on the house and having that discussion- I'd wait for any other chat until after tht's done so you can both leave with some memories of laughing about something together. You're right that he's likely to be dreading this, and is no doubt under some pressure from OW. That puts you in the position of strength, IMHO, although it won't make the discussion any easier on you.
Hope you feel better tomorrow, in time to catch the Take That special in the evening- can't wait!! I wish we could arrange for FD, piano-man, newletter guy or any of those guys who wolf-whistle at you on the street to come up to you when you're with H on Monday and say something appropriately jealousy-inducing