Looking at a cab fare chart I have from a couple of years back the cab fare from airport would be $30 for 1-2 passengers, $10 extra for 3-5 passengers. I believe that includes one bag per person not sure rate for all. bags.

This only gets you to one place. If you stop for provisions along the way there would be a "wait" charge added. So, to me, the car rental sounds reasonable. Plus taking cabs would mean another charge each place you went.

BUT does the car have to be returned back to airport? That doesn't help you.