I've had my car on jackstands for a while, doing a few things. Can confirm that if you have a GOOD radiator and fans (no mishimoto garbage, especially fans) then you won't have an issue with overheating. I've had my car running in the shop when it's well over 90f ambient for an hour at a time and never once saw over 200f coolant temps. Even with an oil cooler between the FMIC and radiator.
My setup has an afco 80107n radiator and a single 14" Maradyne 225w fan. It's a bit oversized for the radiator, but it gets the job done.
Seems i don't have any pictures of the final install, but you get the general idea. This is an ETS 3.5" DSM Race core. It's as short route as it gets.
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Oh yeah... it also doesn't hang below the front bumper cover.