Yeah, 185 gallons is not a pond for a koi that can get to 18 inches in 2.5 years. These two koi will die sooner or later from lack of oxygen or an ammonia rise. You need 1000 gallons for the first koi and 500 gallons for each koi after or you risk random deaths over time.
An 185 gallon pond can support 16 goldfish with a decent bog. If you are keeping one of those big goldfish comets then you can probably support 8-9 of them (20 gallons each).