Is there a reason you need to use logic fet and not just a simple power fet/transistor. ex. tip41
If you only want a on/off, you just need to saturate the gate/base with current protection as required, add a resistor to limit the current threw the LED on the collector side.
http://www.siongboon.com/projects/2006-06-19_switch/motor.gif
Why make it complicated, or am I misunderstanding something?