I struggled with UK weather, instructor availability & own availability for a year without getting very far, about 10 hours in total - before going to the states and finishing the whole thing off within a couple of weeks.
It's the only way I was ever going to get it done.
The standard of instruction in the USA was no worse. I didn't have any trouble dealing with the weather when I got back. The other differences are so small there isn't much change at all. If you're sensible when you get back from Florida or wherever, you'll be fine.