I've been running Benbo tripods for the last 25 years, all of them are equipped with a Benbo 50mm ball head.
My Shen Hao sits very nicely at any angle with all lenses except the 400 Tele, which is really quite large and at one end of the camera. In fact the camera has issues if you close focus the tele and rack the rail out anyway.
I also have a Calumet mono-rail, now that is a heavy camera for a 50mm ball head, the ball head just holds it. Not the best really.
You might like to consider the Manfrotto three way 056 head, it's very small, quite light and holds my Calumet with ease.
I think with the light weight camera you are thinking of, the ball head you have, will work very well.