Boca is booming — without the boomers. When Diana Gonçalves, 33, a Pilates instructor and personal trainer, was looking for the perfect place to live and open her fitness business, she chose the pink-painted, gray-haired town of Boca Raton, Florida — on purpose. “I’ve lived in Scotland, Portugal, Spain, and stayed in Thailand and San Jose, California, but when I came to Boca, I thought, ‘I would love to live here,’” Gonçalves told The Post. “I love the weather. I love that we are very close