[help]Would it be a bad idea to move my golden/yellow lab mix to the mountains of Colorado if she grew up in Florida?

she's 4 years old and very active, I live with my brother on the beach in Florida most of the time so she gets a ton of running in(1-3 hours a day) and a lot of sunshine so I'm afraid what would happen with such a drastic change. She also would go from living with 3 other dogs to just a cat..