90% capacity factor is possible but quite generous, France is below 70%. As nuclear penetration goes up it becomes impossible to sustain high capacity because demand itself is variable, so you either need to overbuild nuclear and run nuclear at low capacity factors, or you need to build storage.
I'm very shocked to see that China's utility scale solar project is $600 per kwp. I almost want to say something must be wrong with that number. It's higher than retail rooftop PV costs which is $450 per kwp.