Yes it was a very great armor day! You did very well Sir Edward as I must confess I was a bit concerned for you since it was your first time in the new kit and I believe your first outing in this kind of weather in armor! Huzzah and well done! 
Oh, I've done worse. But this is probably the furthest I've pushed it since I got smarter about it. About 90 degrees and partial plate armor is a little crazy, since it's a solar oven.
My worst and most stupid outing was when I first started doing armor back in '99, and I wore over 50 pounds of steel mail and a wool surcoat to MDRF's opening day. It was about 96 - 99 degrees, sunny, and horrendously humid. I was dehydrated with a migraine after 45 minutes and took the armor off at that point, and didn't recover for the rest of the day. Since then I've been careful not to push it so far.
Yesterday was probably about my limit. But we survived it to the end of the day! And I didn't get overly dehydrated! Huzzah!
Yes that was a lot of fun and a great experience being squires for the jousters. We'll have to armor-down before doing so again next Sunday if they should require our assistance again. 
Indeed! Plate armor in the sun isn't the most practical for squiring.
When the one jouster was unhorsed and his horse ran back down the list towards me I had tried to calm him so I could grab his reins, the horse slowed a bit and perked it's ears up for a second, sort of like saying: "WTF?", but then he lowered his head and laid back his ears which gave me a moment to calculate the math formula:
If an armored dude (me) weighing perhaps 300 pounds tries to impede a horse which is 800-900 pounds equals me getting trampled!
So I gave the horse the road.
That's a smart move! I think your math is sound.
