Luxeon LED powering and switching

I've ordered 4 luxeon rebel 500mA LEDs
http://www.luxeonstar.com/Red-Lambertian-Rebel-102-lm-p/lxm2-pd01-0050.htm
intended to give a sequence of flashes of about 50 ms each second (Red beacons on a scale helicopter). There will be 22v (70 A) and 6v (10 A) DC supplies on board.
I presume a suitable driver is the buckpuck one sold by luxeon
http://www.luxeonstar.com/700mA-Non-Dimmable-BuckPuck-Driver-With-Leads-p/3023-d-n-700.htm
I presume my 6v supply (that also drives the stabilisation electronics and servos) is OK.
My question is: can I use a single driver, and switch the driver output to each LED via set of 4 FETs in turn switched by a picaxe microcontroller?
I don't intend to use any dimming function.
I've read the sticky about LED powering and presume a driver like this is needed.

Nelson