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Massively delayed response - but thanks. I really did not like the acrylic eggshell I used when last decorating (Little Greene's Intelligent Eggshell); great going on and in the clean-up, but durability not a patch on oil IMO; marked really easily. Now using LG's Flat Oil Eggshell and it paints and smells like gloss paint should. Lovely finish, too.
Timmy2wheels-
It's a minefield. There's a pretty good one by Icon called Porslin which is formulated for greater durability, it's not quite the same level of sheen as the typical oil based eggshell though. If you like the oil based finish and can stand to work with it then go for it. I don't think there's been a better woodwork paint since Dulux trade eggshell and the matching primer but I used to get complaints about the smell and the VOC's must have been through the roof. I ended up having to use a solvent mask due to too much exposure to it.
Airhead
You have that pretty much right. Start the alcohol binge much earlier in the process though.
You should definitely wash the walls and ceiling with sugar soap. Why oil based eggshell? The acrylic is pretty durable these days and far less a pain in the ass. Woodwork needs a primer/undercoat maybe 2 depending.
Your future floor work may screw with your woodwork depending on how carefully it's done.