I wouldn't mind fitting a larger boat hatch at some point in the future! I'll probably have about 1.6m wide by 2.5m left to store stuff/use as a sun terrace, can't wait to be up there sipping a cold beer!
I've got 350w of solar charging 230ah of batteries. Still waiting for stuff to come so I can wire it all up from bimble... They seem terrible at actually delivering things on time!