By going to Florida, unless it's truly a mutually agreed-upon decision by you and your s/o, you're basically saying, "I am putting my career above you in priority." It will be harder to stay together and happy once you're in medical school, period. Adding the 2,000 miles makes it even harder.
But think of it this way: you actually have more than one reason to stay if you would prefer to be close (vs. across the country) to your family and friends. Try to take your s/o out of the picture. What would you do if you were single? (Or can you even imagine yourself being single?) Maybe that would help.
Both of those schools are great and at least as far as I know, pretty equal in terms of reputation and quality of education.