Depends what you eat a lot of. I grow toms and cucs, always try peppers, had a go at aubergines last year and got some teeny fruit that ripened but not big enough to eat. But what I eat most of is baby leaf salads, so I'm using half the greenhouse for consecutive sowings of mixed leaves and spinach, toms underneath and cucs/peppers the other side.
Def agree courgettes go out. I have several huge muckheaps I can use for those, they love very rich manure, even what is too recent for other plants they seem to thrive - along with squashes which I've mixed success with, but always have a go since there's so much space for them!
Let us know how you get on.