Trump is one of the few presidents who has a private jet.
The fact that there's no TFR over Mar-A-Lago could be because this would be a great inconvenience for him.
That said, Trump might not be in FL - Washington Examiner and OANN have not provided tangible evidence that he is.
No his own TFR wouldn't be an issue for his own aircraft.
Why would he beholden to a flight restriction that is there to protect him anyway?
Have you been to Palm Beach? His aircraft is most likely at the PBI, a 15 minute drive.