Having operated on two patients just like you in the last week, I can confidently say you would benefit from a breast lift.
I would also say that with so many excellent options in the areas that you are looking in, I would not recommend going overseas for this operation. You want to see a quality surgeon who operates in an atmosphere that meets the rigourous standards set in the US.
Here in Santa Barbara, I see patients from all over the world who come to have their surgery and recover in paradise. We have photos sent to us via email, or can use teleconference to discuss options.
Pro-operative blood tests can be done at home before your trip, and patients usually come to Santa Barbara about two days before their surgery for a pre-operative visit, to get any last minute questions answered, and to do a final hands-on exam.
Make sure you are given all pre-operative and post-operative instructions before your trip is made. I'm sure many surgeons in Florida and California do similar arrangements with travelling patients- an overseas trip is not necessary.
As for the surgery itself, you make want to check out more information here on RealSelf.