How much hiking you wanting to do? I have camped A to C (back when you could camp C), but also B to D.
I like the hike up and over from A to C. It is steep up and down, take your time. But I think the river on the east trail is pretty, especially the grotto.
Can fish the ponds. Guadalupe bass are tough. Typically had success at night with top water. They would come out when presented a frog, but water so clear they would see you and spook.
The west trail is great and can be extended by doing the loop.
C was the one of the best backcountry sites in the state park system. One day they will reopen it.