Funny things about those Ford trucks, huh?
Well it sounds like you did one heck of a job at getting that bad boy cooling off. I'd like to suggest a couple things for your thought.
1. If you havn't done so already, I would get a nice set of aftermarket gauges including a transmission temperature gauge. I like the luminescent white faces. Then every time you drive, you are not only given precise information, but you are reminded of the great job you did in cooling off your vehicle. It also looks pretty neat, too.
2. I'd give serious thought to an electric fan in the future because some of those do a superior job of cooling. From what these fan-makers say, you can also squeeze out some extra horses, too, by removing the extra belt. I don't know how feasible this is, but it is something I am going to analyze with my older F-100 after I get a few other higher priorities repaired.