Some things to consider. As great as it would be to retire in warmer climes for part of the year life sometimes gets in the way. We have four grown up kids who are in professional careers ( law and medicine ) and 7 grandchildren. We had a similar retirement plan...   The children were all well educated, the house was paid off  and we were, in several years time, going to live in Hawaii for part of the year, then my husband got parkinsons. He is no longer able to travel and is now in an advanced stage . Luckily we have the means so that he can be looked after ( by me and a live in aide ) and that is what our retirement looks like. He is seventy and I am a very young sixty eight and neither one of us saw this coming. ( Who would ? )
You may need far more in retirement than you can imagine if life throws you a similar spin ball.  Enjoy the life you have now with your partners, and save as much as possible 
( Life is still good. We feel blessed with a great family and are thankful. )