Our OP Randy reminds me of former Red Sox player Daniel Nava.
Hit the first pitch he saw in the major leagues for a grand slam.
Guess he figured he couldn't do better than his first thread, so hasn't been seen since.
I would like to note that the heat is not really a problem with the resistors we all use, as they are much better current rated than stock. They get no hotter than a heater hose I would think.
As to variable speed setups, it is tempting, but I think we had a poster note that they always lose some small percentage of full speed, and this car needs all the fan it can get.