I use my Camelback, and carry the pump there. It did not seem like you were keen on that idea.
This way, one water bottle on the frame serves as the emergency water.
I also like the idea of asking my wife to meet me every 35 miles on my next long ride.
She could bring not only water, but fresh fruit, granola, etc. Maybe foot massages.
She is stoked about my having 5 bikes in the garage instead of the two I am allowed to have. I think she will be supportive of being my personal SAG.
I explained it is not really 5 bikes. Two are legitimately there. One is to be repaired. One is my work bike I need to take to my office.
And my Tempo is just my......I forgot why the Tempo didn't count. But it didn"t.
Best of luck!!