I think we answered this on email but I’ll add it here in case others have questions too. The Voltage rating of the capacitor can be higher with no issue but NOT lower. So the 475V is just fine.
Basically its saying that the voltage through it can’t exceed that number. So in a power supply section, they need to be much higher than in the signal section.
If you get into designing more in the future, there may be some drawbacks to having too big a difference in voltage (price and potential noise) but in this case, you are good to go!