That is a fabulous itinerary. St. Barts, St. Kitts and St. Lucia are fabulous. I have never been to St. George's or Margarita Island so you will have to give us a ful report when you return.
I have not sailed the newly remodeled Empress yet, but I did have a friend just return from a Bermuda cruise on her. He said that it appeared most of the renovating was done to the public areas. They have added Portofinos (Italian specialty restaurant), a coffee bar and ice cream shop. My friend had a Jr. suite also and indicated the room was small compared to other Junior Suites he had been on in the RC fleet, but acceptable.
No matter what size the cabin, the itinerary should more than make up for spacious accomodations.