In Response to the comments ...
I will try to get together a few pictures and figure out how to post. In the mean time, responses to some of the questions/comments above.
We are familiar with Domino. We were in New Zealand and Fiji for one season at the same time as the original owners.
My wife decided it was time to return to this side of the world so we could be closer to the grandkids, and she did not want to cross any other Oceans (eg long passages). We made the decision to switch to power because we would predominantly be going N/S up and down the coastlines, whether it be East or West Coast, and a power boat better matched the sea-state defined weather windows we would be looking for. We wanted to stay with the catamaran because of the inherent greater stability, whether underway or at anchor.
Our original preference was a 50ft (same as our sail catamaran). Because of the time we had spent cruising, we had some clear ideas about what would and wouldn't work for us. The important parameters "for us" were 1) ability to efficiently cruise at 10kts, and go faster if necessary, 2) have a cruising range of 1000nm at the 10kt cruising speed, have tankage, electrical power, and storage to allow us to be self-sufficient for extended periods, whether in the Bahamas or SE Alaska, and be easy to maintain (access, etc).
After almost 2 years of looking we compromised and went with a larger (60ft) boat than we were originally looking for, so we could get the other things that were important to us. The Malcolm Tennant design is a very efficient hullshape, and provides for good protection of the running gear. We have twin Cummins 6BT 210HP engines, that allow us to easily cruise at 10kts. With 1500 gallons of diesel we have a range in excess of 3500nm with a 10% margin of safety. We carry 450 gallons of freshwater (200 gallons of blackwater) and have the capability to collect rainwater as well as a watermaker. We have 900AH of AGM house batteries at 24VDC, 2400 watts of solar, secondary 200AH 24VDC alternators on each engine and a 6KW 120VAC Genset if we need it. We have 6KW of inverter, for 120VAC service.
Systems are easily accessed, making it relatively easy for an old man to maintain them.
More than happy to answer any specific questions.