In my personal research on cooling i have discovered somethings. These are first that come to mind. Mind you this is on my car and may vary on others.
My car runs a lot cooler with iron heads than it did with aftermarket aluminum heads
My car runs cooler with the small electric fan set up as a pusher than it did as a puller (fan is in front of rad. compared to old setup behind)
Make sure the cooling system is filled with water/coolant, ive had the issue of not having enough coolant in the system and running her so one day i opened hood and removed the radiator cap, i let the car run with cap open. Once the thermostat (180) opened the radiator basically became empty i couldnt believe it. I was like 2 containers shot, cant remember but i think it was almost 2 gallons of coolant low. Once the thermo opened i began pouring coolant into the radiator till it was full then capped her back up.
also, i hate to mention but those 2013/14 vents are way to far back on the hood.
edit #1: In my car personally ive noticed when driving at high speeds the car runs very cool, i dont even use my small electric fan. Only time she starts getting warm is idling and stop in go traffic. Im very impressed because with my current setup the car runs MUCH cooler than my last motor with aluminum heads and same fan. With fiberglass cobra r hood and fan on the back of the radiator i would see 240 degrees sitting in traffic, panicking.
Now with stock hood (custom heat extractor setup) and fan on the front of the radiator she runs very cool. ill have to do a test when i get home in the summer
I want to box the radiator in and create a rear facing duct to feed hot air from the radiator to right outside going through the massive hole i cut in my stock hood.
Edit#2 Here is my how my car is currently: