Trans coolers, fans and consistency.

As I am looking over the "to do" list and replacing the ring and pinion (3.55's) on the Cuda for Dany's next Bracket Racing attempt I am wondering:

Car now has the factory steel 8 blade AC cooling fan (need to attach the original shroud to the aluminum radiator somehow, that's what got me thinking about the fan)
A clutch fan would free up a little HP, but if it gets hot enough waiting in line to engage on one pass and not another where she starts closer to the front of the line I would think that would add to inconsistency?

What about the trans cooler? If I were to add an external cooler, would it make sense to eliminate the cooler in the radiator?
It is my understanding the cooler in the radiator is there as much to heat the fluid in cold weather as it is to cool it, so eliminating it and just using an external cooler would keep the trans cooler and a more stable temp as it isn't being heated by the radiator if it gets warm in line?

This car has no cooling issues or trans issues at this time.
And I am trying to add the original shroud back on it as much to quiet the fan (it is noticeably louder than it was with the original radiator/shroud) as to keep the temps more stable.

Would consider a flex fan of some sort if you guys think that would help in the HP department, but am I wrong that a clutch fan cutting in and out leads to inconsistency?