led cct.pdf

HI All...
The circuit Above drives five rows of various LEDs at @30mA per chain... 5 chains at @30mA = 150mA Total cct.
My Idea as outlined previously is to use a pic chip with a pulsing duty cycle of around 5% at 100ish Hz
I previoulsy was thinking of sourcing into a mosfet of some description so I could use 24v DC on the high side.
Ben suggested Switch Mode LED Drivers of some description but I am totally open to sugestions....
I need to get max illumination at the lowest current.... So if we can resign this circuit to get lower than the existing
150mA the better..

Many thanks for reading and suggestions.

BR
Andy