Kevin Federline’s children come first. Before his set at the Pool After Dark at Harrah’s Resort in Atlantic City, N.J., on Sept. 14, the DJ — who has two sons, Sean Preston, 14, and Jayden, 13, with ex Britney Spears — told Us he was “flying home” immediately after for his oldest’s birthday. Being around is his top priority, especially after filing a restraining order against their grandfather, Jamie Spears, who allegedly got into an altercation with Sean Preston. When we asked Federline, 41 — also a dad to four other kids — whether he’d have more children, he said, “I got my hands full.”…
