Since you have a shop and fabrication experience just build a flat metal “slot” discharge across the end of your driveway strong enough for vehicles to drive over.
There will a slight decrease in discharge head seen by your pump if the water velocity at discharge is low and exit point a few inches lower. both of which will result in a slight increase in gallons per minute.

Discharging across the driveway to street apron might be considered safer than the wet sidewalk situation.