This is as far out as you can drive on the part of the island known as Way Key - which was originally the name of the whole island. There are many beautiful homes for sale - as well as lots - so, maybe you will be tempted! It happens to people here all the time: they come for a week, then two weeks, then a month, then two months, next, the whole Winter! Finally? They buy something!
This should really be a pretty straightforward and easy park'n'grab. Definitely doable for someone in a wheelchair. And, a nice view.
BYOP. Not having a writing tool will not fly. It is geocaching conventional wisdom to carry at least two. Lost them? Find a way to make a distinctive mark and describe it. Log maintenance appreciated. DNF? Log it! And, please, no throw-downs.