Take all the G&S I have. Have a mate with a farm. I'd head straight there to fortify it and avoid the crowds. No point sitting around waiting for everyone else to clog up the highways and break down in terrible places.
EDIT
Re-read my answer and thought I looked like a psycho. Note that is for SHTF fantasy scenarios where a flint to start a fire is more valuable than many other things.
If, to re-read that the economy was just going down...well after selling all my personal and SMSF shares, stocking toilet paper, some more food any fuel, lots of small size silver with a few gold to trade for capital goods.