Hi,
I tend to think both options would have their pro's & cons.
With a CVP you've only got the one unit. To me it looks better if the piano resides in your main living area the way mine does. My husband was not overly impressed when I midied my 2 keyboards to it. They became the focal point of the living room.
Plus side, for a CLP plus a keyboard would be, the keyboard is portable, plus if you feel you need to update the arranger section, you'd only need to update your keyboard, not the piano.

It's a case of what best suits you & your lifestyle.

I have a CP170. I ended up using my laptop and arranger software for my arranger functions.

best wishes
Rikki