Warn 10k winch is rated at 502amps... pretty sure a 250amp would melt down.piece of pie!
no reason to add complexity..The winch has solenoids, you are adding a solenoid for the solenoid. Winch power cables directly to the battery. If you want, you can put in a battery disconnect. If you want to go high tech, a remote battery disconnect. Simple is a manual disconnect
Want both https://www.bluesea.com/products/7700/ML-RBS_Remote_Battery_Switch_with_Manual_Control_-_12V_DC_500A