PLANNING that BIG round the world trip

So, I am jotting down the cities that I want to visit, as well as the number of nights we may possibly stay. Some places to visit.. Nothing set in stone, just rough ideas at this stage. So here it goes....

Hong Kong - 3 nights
Tokyo - 4 nights
Osaka - 2 nights
*Seoul - 3 nights
London / UK - 7 nights
Paris - 5 nights
Madrid - 3 nights
Barcelona - 3 nights
*Monaco / Nice - 1 night
Rome / Vatican - 3 nights
*Sicily - 4 nights
Tuscany - 7 nights (car hire)
Venice - 2 nights
*Florence - 2 nights
Cinque Terre - 3 nights
Mykonos - 2 nights
Santorini - 3 nights
*Valetta - 3 nights
Zurich - 3 nights
*Dublin - 2 nights
St Petersburg - 4 or 5 nights
Frankfurt - 4 nights
*Brussels - 2 nights
Amsterdam - 4 nights
Copenhagen - 4 nights
Stockholm - 4 nights
Oslo - 3 nights
Helsinki - 3 nights
New York - 7 nights
Los Angeles / Santa Monica - 7 nights
San Francisco - 7 nights
Lake Louise / Jasper - 3 nights
Honolulu - 6 nights
Maui - 4 nights
Boracay - 6 nights
Cebu - 4 nights
Manila - 7 nights

*Budapest River cruise
*Caribbean cruise

*Optional city visit for now

I've just computed the number of nights above - and it is already looking like a 4 month vacation! Eventually I will need to cut some nights. For now, this is just a rough guide anyway!!! (I got too excited!)