I looked at that cruise. Really nice but too long for me to be away. So I had to decide against that unfortunately but I think you picked a great itinerary.

Not 100% sure yet but will probably do the following

Norway on the Explorer and the following cruise that goes to Germany and Poland. New ports in Norway I have not been to before.

Dubai to Singapore in November with India and Myanmar

A New England cruise end of sept or early October for something without long flights.

Early in 2020 probably a crossing from Europe to USA. Not done a crossing in that direction where you gain hours for a while.

In an airport right now so don't have dates but will post nice this plan is confirmed.