Jerald,
CCA means "cold cranking Amps" It means the ability to deliver "short bursts of high energy", such as needed when trying to start a cold diesel engine. The extra 150 amps you have will help if you are in really cold weather or as the battery ages more capacity.
Seeing that you are replacing the chassis batteries with a similar type there is nothing for you to change. The house batteries are your main concern when changing to a different type, example: from lead acid type to an AGM type. I do not have the model of your TRACE (Xantrex) remote control, but that is where you could look up the settings in the event you did have to change the set up. Hope this helps, Fred