Looks like youre on the way to solving some of the issues:
https://www.mishimoto.com/ford-f150-performance-aluminum-radiator-2011-2014.html
https://www.full-race.com/store/eco...-150-ecoboost-freakoboost-radiator-upgrade-1/
I will take a turbo V6 over NA V8 when working at altitude anyday!
I like the 60%wated 40%EG blend....I tend to run 5-15% more water to improve btu exchange. Skip the Redline wateretter and try koolit
https://www.lubegard.com/products/koolit-treatment/
I dont care for colder thermostats but could be considered...otherwise, I replace every 5 years with OE or equivalent.
Needs a catless turbo back exhaust or least a catback. Get the heat out after turbo extracted some work from it.
One of the few 'worked' trucks around!!!!!
You read my mind about the downpipes and exhaust. Although, i might go catted because I really don't wanna smell it and getting the CEL turned off is nearly impossible these days. The tuning companies wont do it. There is also the AMS turbo adapters which replace the outlet of the turbine housing where the downpipes attach. Supposedly those make a decent difference.
I bought the Mishimoto because its 10mm thicker than the Full-race radiator. I know of a few people who have the Full-race and basically said it slows down the overheating but they still end up getting hot. I don't really know anyone with an 2011-2014 Ecoboost who has tried the Mishimoto.
Why Koolit vs Water Wetter?