Stealth - I'm not sure I could recommend it with all the stress involved! 
However, I am amazed how clean and bright the rooms are now. The carpet is lighter in colour, but perhaps it is because I cleaned all the light fittings!
I also got into all the corners with a duster and washed all the skirting etc..
Some time soon I have to go through it all again with the hall, stairs and landing. However, there are only 2 bits of proper furniture there - a bookcase and a DVD unit, neither of which are particularly big or heavy. Although there is a lot of other clutter, most of it is already in boxes or crates, so it won't take too long to shift.
Last night I went through the crate of paperwork that came out of the ‘hanging file’ section of our big Ikea unit in the living room. I got through about 90% of it. This time I hope to properly label the completed sections, so things can be found easily. I have neatly filed current insurance documents, dog vaccination cards etc.. I threw out the instructions for our old TV, cooker, fridge, kettle and boiler. I was positive I had been through all these recently. I also threw out a lot of old leaflets from the DVLA and passport office.
What do you all do with old passports? I have just put these aside just now. I know I have some others somewhere.
I am another one who has a big bag of stamps collected for Charity. I am trying to avoid paying postage to donate it somewhere.