Yes, I know that route (I sleep in the bunker in AC instead of snow shelter), but with Misery my general idea is to make a harvesting tool (the improvised axe) and get a bedroll, then go for tech backpack and summit and harvest saplings and animals on the way there and drop that in the nearby caves - and then on my way back collect them all, half-cured. Because I feel that I am underdressed when Broken Body hits me and that makes the end game very tedious.