experience of more hours and years than I care to remember or will admit to and training and managing more pilots that I can remember
Concur!
Matt,
As you are in the USA a "green bag" CWU27 Flight suit can be had surplus starting at about 25 bucks upwards depending on the quality.
As you claim it is so "hot" just wear the bag at least. Buy a few and all I used to do was shower with the bag on wash / rinse it after you get out of it and hang it up to dry. Put a clean one on for the next day. Worked OK for me at temps around 115F and your OAT only sez 84F or 29C. Thats a balmy winters day where TET comes from!
Be careful that with time the Nomex can wash out. Try a cigarette lighter comparison between a green bag and your current gear.
Not trying to tell you how to suck eggs but..................