Hatt A/C comment; A/C prices have gone out over the roof since Dometic shut down R417a/R22 support last fall. Inventorys are pretty thin on the new R410 stuff and delivery dates are weeks +. The better dealers may have some components in stock but not much. This mad house will cause strange pricing, subject to change near weekly. I do recommend split systems in a larger and nice ship. I remember working on a later Hatt 70. Master state room had two SCUs under the bed. I heard them running during the day. Can not imagine anybody sleeping thru that racket. If you are replacing multi units, consider a chilled system.