I have used the ULN2803A to drive large banks of IRLED's for video
cameras.

Wire all of the ULN2803A inputs together. Use a single I/O-pin to drive
the 2803A inputs. You have 8 NPN darlington high-current drivers in a
single package that can control a whole herd of IRLEDs.

FET's are also a good option, but pretty much any GP transistors will
work ok at this low a frequency.