The trails are strenuous but views are amazing! Its definitely worth it and right outside town, not far out.
I visited Crowders Mountain in December, and the weather only required a sweatshirt. My brother and I spent the day rock climbing. It was his first time climbing, and we were able to set up some beginner-friendly routes.
As for the camping, your only option is a walk-in campground, about a mile-long hike. Drinking water and outhouses are available though.
This is an excellent place to be, especially if you are looking to get out of the city for a while. The hikes are pretty strenuous, but thew views are well worth it. The people are friendly, and maps are easy to come by. The trails are easy to follow, but be sure to bring plenty of water.