Bracket Car Wiring Help

This is the way that made the most sense to me also.

What about running the radiator fan and transmission cooler fan off the same switch. See any issues there?

Thanks!
You could ... if you want to give up separate control.
Then again ... If the trans-cooler is in front of the radiator and the rad fan is behind it's almost redundant.
If the trans-cooler is mounted elsewhere just find a spot for an additional switch/relay.