Robert M. Gary wrote:
I wonder if the small quantities will cause the price required to cover
the overhead of the tank, etc more than the price of the higher volume
100LL? When I had the Aeronca Chief (65hp cont) the engine ran MUCH
better on MOGAS than 100LL. The automotive detergents helped keep the
engine clean along with the hotter burning lower octane.

What makes you think the lower octane burns hotter?
How does the difference in octane additive make the fuel burn hotter?