When Steven Karidoyanes drove to Plymouth for the first time in the early 1990s as a candidate for music director of the Plymouth Philharmonic Orchestra, he remembers cresting the rise on Samoset Street and catching his first glimpse of the ocean. “My lungs filled up with air,” he recalled. “I thought, ‘I have to have this job.'” More than three decades later, Karidoyanes isn’t ready to leave. The Plymouth Philharmonic has announced a new 5-year…