The IRL60B216 which has ON resistance of 1.9 milliohms - therefore 11W power dissipation at 75A

One of them should be able to do the job.

 

On to the final part of my order... the freewheeling/kickback diodes.

Can anybody recommend a good diode to put across the loads + externally to each FET?

For reference, am going with the five IRLZ44N plan ebp detailed, for ease of wiring.
After this question is answered should be officially done.

 

On to the final part of my order... the freewheeling/kickback diodes.

Can anybody recommend a good diode to put across the loads + externally to each FET?

For reference, am going with the five IRLZ44N plan ebp detailed, for ease of wiring.
After this question is answered should be officially done.

1N5822