Head for the tropics, I suppose. After you get some and then go to confession of course. I'd think the dust thrown up would create an albedo effect, so you'd better off at small latitudes. Bring some canned goods and that stuff that purifies the water and makes your Raman noodles blue. Maybe a handgun.
You'd definitely want to head well away from any coastline if you intend to attempt survival. More than likely any and all coastlines would be well and truly f-ed if there is a water impact.
Also keep in mind that while the tropics might not freeze like much of the mid-latitudes and northward.... there would be sudden and catastrophic drying that would probably do a lot of the rainforests in.. with only remnants remaining in mountainous areas where rainfall would still be sufficient.
Otherwise once the waves settled... being on the west coast of a continent would be your best bet. The ocean would moderate temperatures and you'd have the bounty of the seas to feed upon since most marine life can adapt to sudden climate changes (better than land plants and animals).
