CAM's are a good choice. I'm partial to the alnicos having tried both that and the 7" ferrites.
My advice is to get your speakers first and experiment. Those JBL stands have a tilt, which may be perfect. But, once you have them, you might find a higher stand with no tilt is preferable. Use boxes or whatever you have to find your ideal positioning, height, and tilt. Then order or build stands accordingly.
....Pete