Construction delays and budget overruns are only part of the problem facing Miami’s new performing arts center. How will the facility find money to stay open once it debuts? “At this point $15.2 million a year in expenses has been identified but only $12.5 million in revenue, leaving a $2.7 million yearly deficit. With the collapse of the Florida Philharmonic Orchestra, the PAC is left with only four resident companies. They’re scheduled to fill only 125 nights a year of the combined total of 730 nights available in the PAC’s two biggest performance halls. That’s less than 20 percent.