Hmmmm....
Unsure what your variable CVT ratio is, but at 4:1, your intermediate gear ratio is 12.57:1.
With 32t/52t combo, final gear ratio is 20.43:1.
With 32t/48t combo, final gear ratio is 18.86:1.
With 32t/50t combo, final gear ratio would be 19.64:1.
What is your variable CVT ratio?