I hear ya!
Our bike guy might have found a better stem for Paul's bike, which would help with his upper back discomfort, if it fits.
I got new bike shorts with awesome padding in the butt, but let's say that after 50 miles they don't fit very nicely everywhere. Hmmm. Decisions, decisions.
We think we are good with hydration systems (light hydration pack and 3 bottles with electrolytes on the bikes), which should be adequate for 80F.
Pray for dry weather.
I'm praying for clouds, no rain...... The heat is fine. Or sunny on a cool day is fine too. I don't do well in hot, "sunny" weather. Something about the hot sun beating down on me for hours on end that gives me trouble.