We chartered a 2019 Lagoon 42 this year and loved it. I'm probably not as seasoned a sailor as most here, but I thought it handled and sailed great. The self tacking jib was a breeze, and you can really fine tune it with the car positions along the track. We probably averaged 6 to 9 knots. Didn't have to motor much, and ran the gen at night for air. Used about 44 gallons of fuel. You might get spoiled with only 5, as we were just 2 couples, and I'm not sure I could go back to 4 couples on a boat. A fly bridge would be nice to have, but I don't think you'll miss it too bad. We chartered with TMM, and there are a few owners here on the forum who have 42's and 450's there. They could give you a good report. Enjoy