Got a 20 ft flat bottom boat. 8 ft wide. Commercial boat. Not sure on weight. 30 gallon fuel tank. Will have total of 90 gallon live wells. It's a weldbuilt boat. Has a 1987 johnson 175 hp on the back. Motor had no prop. Was told had a 14.5 by 24 15 spline on it before. Think this would be fine? Thanks.