47-59 Opinion needed - routing of wiring

[TX3100Guy]

Given that I have a completely new wiring harness to install, I have been allowing the process to marinate in my mind. I want a cleaner firewall than the stock setup that I had and have been trying to determine the best places to get two wiring bundles (right side and left side) to the front of the truck.

On each side I'll have headlights, turn signals, daytime running lights. On the left side I'll have alternator, oil pressure, fuel pressure (for the supercharger setup), and water temp. On the right side I'll have electric radiator fan, horn, magneto, supercharger, and starter solenoid.

Here is what I'm thinking. I have eliminated the stomp starter and therefore have a nice out of the way hole, low on the firewall, just above the bell housing and behind the 261 cu in 6 cylinder engine. I could have both bundles penetrate the firewall there and then route to each side of the frame and each wire to its respective location.

The question is, will that location be too hot for the wiring bundles?