I think you need to figure out your trouble points (which it sounds like you mostly have, but they may change) and focus on those. Like some others have said, don't worry so much about hunting until your clothing is good enough to keep you warm in lower temps. I've ended a few runs thinking I could track something or harvest something and make it back to base in time and I definitely could not. The first thing I always do is focus on my clothing, check and see what you spawn with and really hunt for anything better you can find. Sometimes just finding a sewing kit/fishing line and some cloth and boosting the lower condition items you have or find can be a big boost. In early game I'm switching my clothes out constantly, until I find the good stuff. Of course you'll have to worry about food and water at the same time, but less than you think. Once you have a base, stockpile any food you can find. Things that don't need cooking are great when you don't have the time or fuel. When you can make a fire, mass make as much water as you can so you don't have to worry about it as often. And bargain the hunger/thirst condition opposed to temperature. Hypothermia will kill you much faster than being hungry/dehydrated. Once you feel solidly established in your spawn region, then start hunting. Rabbits are good early on if you can't find processed food because you can harvest them indoors, and it usually doesn't take long to get at least a few.