Plan a big clear-out weekend that actually gets finished

Help me plan a clear-out weekend that's actually finished by Sunday night.

Rooms or areas: [e.g. loft, spare room, kitchen cupboards]
How bad it is: [e.g. boxes we haven't opened since moving]
Who's helping and when: [e.g. partner Saturday only]
Car or van: [yes or no]
Where things can go: [e.g. charity shop, tip, selling online, friends]
What I find hard to let go of: [e.g. kids' things, gifts, "might need it"]

Before you start, ask me up to 3 short questions if anything important is missing. Wait for my answers.

Then:
1. A timed Saturday and Sunday plan in 90-minute blocks with breaks, hardest room first while I've got energy.
2. A four-pile system (keep, donate, sell, bin) and five quick rules for deciding in under 10 seconds.
3. A "maybe" box rule with a date to decide by.
4. A run list for Sunday afternoon: what goes where, in what order. Tell me to check my council's website for tip opening times and whether I need to book.
5. A selling shortlist: only things worth the effort, with the rest donated.
6. A 15-minute finish so the house is clear by Sunday evening.

Use only what I've told you. UK English.

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