What horsepower? V20 CC

I'm looking at an '88 Center Console that needs a new outboard. I like the Evinrude E-Tecs. Wondering what horsepower I should go with. Not concerned with top speed, economy is more important. We'll cruise, fish, clam etc with the boat usually with 4 people aboard. Mainly use it in a salt water pond, trips out to ocean when conditions allow. Is 115hp too little? The E-Tec 115 369# is lighter than the Honda 115 498# and Honda 150 478# so that should make up for some of the horsepower. Any experience with a 115?