A night in CDG on the outbound for your honeymoon? even if it is the sheraton or the hilton, I would not find it very romantic.

My advice would be to get a morning flight from NAP or FCO to CDG on the day of your SQ flight, to arrive at 9 at T2F for a flight at noon from T1. However, I understand you might find it a bit risky if your SQ suite tickets are awards and not full flex first class fares. Otherwise, spend a night in downtown Paris, book a nice restaurant, but don't spend the night in CDG itself!