Canoedogs,

I don't know your family situation, but you at least have a wife, and that means you have a responsibility beyond yourself now. Were it not available, then it wouldn't be an issue, but since it is, you need to avail yourself of the extra safeguard that a PLB/SPOT provides. Familiarity with the area is not a mitigation. Do the right thing and prepare yourself reasonably. Renting a PLB is an insignificant cost both in terms of gear load and budget. I cannot think of any legitimate argument against doing it.

Otherwise, have a grand ole time!