follow your heart and go for it! You are lucky that both of you like sailing/sea & adventure Ö donít waste you time, go sailing
As some wise sailors suggested, take on board one or two experienced sailors to help you sail to Caribbean. Once you are there, sailing is piece of cake!
I am a scientist as well and decide to live my career at 50 and to sail around the world! It was fantastic experience. We completed circumnavigation few months ago. I am back to 9 to 5 routine and the yacht (Grand Soleil 46.3) is currently in Italy, will be for sale soon. IF you want to read more about our Odyssey please have a look at our website: http://www.fiu-sailing-adventure.com
Take care, Ivo