>>1387136It's not the weight that's going to be the problem, it's the sleeping bag wagging back and forth that'll cause soreness in your lower back. I also don't see a waiststrap, so that's probably a shit bag overall.
>rest of the threadYou need to do a little more research. All your gear is wrong, you're relying on strangers too much, when the whole point is to be self-reliant, and you're trying to rush it. Do more day hikes and three day trips before you try to run away from home.
After you've bought all the gear you need, replaced it all at least once because it wasn't what you really wanted, and then stopped carrying most stuff altogether because you realized that it's easier to improvise than to carry it, then you're ready.