Bonefish, I live in the Cape. Biking as sole transport for 15 years, electric for almost 6. Number one rule, DO NOT PISS OFF THE OLD PEOPLE. They are almost the sole driver for the economy in this area. Cops and city management are ALL very aware of this.
Pedestrian traffic on sidewalks is extremely minimal. Never had a single issue. Idiots on fast gasbikes did cause some issues locally, there was a crackdown, fewer of them around now.
There has been talk of enforcing a 20-mph speed limit for ebikes, built mine around these numbers.
Total cost with current battery about $750.
General rule for used ebikes is to consider the battery about $50 value.
You mention hills, what bridges are you crossing? Have done Sanibel several times, have not and will not cross the river bridges here. FM beach?
We could meet for a beverage and have a long chat if you like. You work at the Grill? I used to know the owners, or at least the landlord. Interesting character.