The temp vs run duration doesn't seem that meaningful. It shows the first 3 minutes of runtime, and doesn't show if all configurations reach equilibrium performance after that. It looks like they might. These things are usually run for hours, is there a chance they'd have similar cooling performance at that length?
The insulated hose is something I'm exploring myself. There's insulated ducting like this: https://www.homedepot.com/p/Speedi-Products-6-in-x-12-ft-Ins... but it looks terrible. I'm kind of worried about having fiberglass being in my living space like that, the PPE is significant https://homeguides.sfgate.com/safe-ways-handle-fiberglass-in... and I'm pretty sure my cats would shred it up. I'm leaning toward adding reflectix sleeves with gaps so that the hose is flexible.