I think everyone has an opinion on this one!
Being a woman, I am into ultra-light packs. My pack weighs about 11lbs (5kg) with a hatchet. The pack is actually a 19L child’s pack.
There is a old saying, that as someone learns more bush skills, they need less and less equipment for comfort and safety in the woods. That’s been my experience too. The more bush skills I learn over the years the less equipment I need in the woods.
Here’s my personal safety kit. This kit is always evolving and changing because I am always learning new skills. I would take this kit anytime I go into the woods: http://goboxstorage.ca/blog/emergency-preparation-personal-safety-kit/.
Good luck with developing a pack system that works for your individual needs and skills.