[oil pan 4]

I say try to see how low you can go.
I installed the Meziere electric water pump rated for 55gpm and 7 amps on the 7.4L suburban.
At full power the pump moves coolant vigorously through the bypass, seemed like a little much. So I installed a 1 ohm 300w resistor in series with the pump circuit.
That brought it from 7 amps down to 4.6 amps and it only warms up to about 150'F.
A Meziere 35gpm pump uses 5 amps.
I believe the minimum voltage level across the pump Meziere recommends is 6 volts.

Another thing you can try for warming up faster and saving some power if you are running an alt delete is using a time delay to hold the pump off for say 30 seconds after cold starting. That is what I am going to do, now that I am going to run an alt delete, I find my self counting the joules and obsessing over amps.