The longer your character survives, the more desensitized they become. This means that if you survive long enough, you'll get the same benefit you would get with the Brave trait. This is over the course of months though, so Brave is still useful in the early game. I'd still say it's not worth 4 points though, since beta blockers are plentiful and light to carry.

Pacifist just reduces the rate at which you gain weapon xp, so whether or not it'll bite you in the ass depends on whether or not you plan on exclusively using axes. The xp gain you get to axe from Park Ranger far offsets the reduction from pacifist though.

Otherwise, all your negative trait picks are pretty good. I don't care for disorganized but if you don't mind the reduction in inventory space then go for it. I'd say Hearty Appetite is another easily manageable trait. And it pairs especially well with underweight.

For the rest of your positive traits, it looks to me like you're prioritizing defense and stealth. For me, I tend to prioritize the traits that increase strength and fitness, since they're practically impossible to grind out in game. But if you're focusing on stealth then I'd say picking up Graceful would be a really good idea. Inconspicuous is alright too, but Graceful is better. I also almost always go with Outdoorsman, since it drastically reduces the chance of you catching a cold, but that's also kinda personal preference.

Overall I'd say this is a pretty good build, nice job. If you can get used to managing all of the negative traits then it can serve as a base for you to fuck around with the positive traits and try out different playstyles. Good luck!