50 Cent, who pays $25,000 a month in child support and household expenses, might have to get a bigger check. Shaniqua Tompkins, the mother of his 10-year-old son, says the current amount is not enough. The parents of young Marquise Jackson are wrangling over the issue in family court in this Long Island community, where 50 Cent arrived Friday in an armored SUV equipped with a satellite dish. The rapper is “worth tens and tens of millions of dollars,” said her attorney, Raoul Felder. Fiddy’s G-Unit record label, clothing line, ring tones and other enterprises, reeled in an estimated $33 million in the past year, according to Forbes. He has sold more than 11 million albums and has a new album, “Curtis,” due out in September. His lawyer, Brett Kimmel, called Tompkins “insatiable.” “Her demands keep escalating,” he told the Daily News. Closed-door hearings on the child-support case are scheduled to continue this coming week.