Two brothers take a Chance on the next generation at this Hawaii retailerFlint Carpenter Big Island Jewelers Kailua-Kona, Hawaii 66, first generation Gale Carpenter Big Island Jewelers Kailua-Kona, Hawaii 58, first generation Chance Carpenter Big Island Jewelers Kailua-Kona, Hawaii 27, second generation   When Gale Carpenter, owner of Hawaii’s Big Island Jewelers, asked his son, Chance, if he would be interested in joining the family business last year, the 27-year-old’s response was swift and decisive: “I’m all in.” Gale laughs, remembering the exchange. “I said, ‘What? You’re all in? Well, by God, let’s do this!’ I was totally surprised.” Chance, after all, already had a thriving career running a boutique advertising agency and publishing Trim, a global surf-culture magazine. But the lure of “being a part of something that’s lastin