I was in your situation with a 46RH while on a 800 mile road trip.

I now wish that I had stopped the truck,
had it towed to a good trans shop,
and had it rebuilt
while I rented a vehicle.

I also believe that the modest cost saving of a reman lockup TC versus new torque converter is not worth the $.
Always go with new when a lock up clutch is involved.

Lock up torque converters slightly improve fuel economy,
but that slight fuel economy improvement
is far less than a manual transmission with an educated driver.