I agree with Pascal on the 2-burner cooktop. I installed a 2-burner induction cooktop a couple of years ago. I love it. It is a tad fickle about its electric supply. On dock power, it's flawless. On the generator, it has hiccups now and then, and the cooktop actually tells me when to change the fuel filter on the genny long before I have any other symptoms anywhere on the boat. It is very sensitive. Once I change the filter, I'm good to go. For that rare time when I need a third burner (or a fourth one for that matter), I pull out my portable induction cooktop. I have two of those.
I also found a 24" wide oven that opens from the side (as opposed to the traditional oven where you pull the door down). I installed it over my dishwasher. What the micro/convection oven won't do is broil. I really like having the oven at eye level, and I use the broiler a lot. It has saved dinner several times when it has been too windy to keep the grill lit, or when it was pouring down rain. We broil lobster often. If you don't broil, and don't mind not being able to use the microwave when the combo oven is being an oven, then it should be a good space-saving choice.
