Need help to configure my 2M982 microstepping driver.

Hello,

Please need some help to configure my 2M982 microstepping driver with Wantai Stepper Motor Nema 23 - WT57STH115-4204A.

First the dip switchs...
The current of the motors is 4.2A so how do I should put the 3 first dip switch to avoid my motor to overheat?
The SW4 I'm not sure about it, should I leave it in OFF position?
And for the microstepping settings what should be good, actualy I've got 800, is it enought to have good results?

My actual settings are these:
SW1: 1
SW2: 1
SW3: 0
SW4: 1
SW5: 1
SW6: 1
SW7: 0
SW8: 0

Another problem is the step time, step space, direction hold and direction setup configuration.
The pulse low level time of the 2M982 is 2.5 microseconds so I multiply by 1000 for the direction time and space.
For the direction hold and setup I copy the settings from the leadshine MA860H that specification close to my 2M982 but I'm not sure at all.

My actual configuration is:
Step time: 2500
Step space: 2500
Direction Hold: 8000
Direction setup 5000

Someone has a similar configuration that work well that could help me or give some advices.

Big thanks,

Brian