Transmission cooler questions

[Pampas56]

Just rebuilding the Turbo 350 in the my 84 C-10. Looking to add a trans cooler and have a few questions.

1. I understand that the coolant goes into the radiator hot at the top and is drawn off cooler at the bottom. Is it the same with the transmission fluid?

2. Do I want to cut the upper line and feed the cooler from that and then back to the radiator?

3. Can I use quality rubber hose or are the pressures great enough that I need to do the whole thing in steel?

4. And finally, is there any advantage to running two coolers in series, or will that cool the fluid too much?

I know that transmissions run hotter than the engine. Will too much cooling be as bad or worse than too much heat or am I overthinking this?

The truck is used mostly for general light duty. The only heavy loads are generally my 23' travel trailer that I take to the Eastside hunting, firewood or pellets and the occasional load of gravel or topsoil. I just want to give the new transmission the best chance to survive.

Thanks for any help
Steve