I fully understand your reasoning.
I also work under a weight constraint.
I have a reconstructed should and I'm knocking on 60
It might be helpful to others to actually do a thread on lite weight boating combinations
My boat weighs 88lbs but I'm looking at a rib that weighs 79lbs
My requirement is the largest lightest boat that will use a 5hp outboard.
I am using propane to cut down on weight
I have looked at the Torqeedo also
If I go with the 79lb rib the Toqeedo may become an option.