"Since space is so limited I might mix the corn and beans."
Do a 'Three Sisters' planting and put your summer squash at the base of the corn/beans or use decorative gourds and leave them trail on the ground. (Just a few hills!)

I might do that but it’s pretty crowded and it might not work because you’re supposed to do rows 30” apart with plants 8” apart. I don’t have a lot of space so I did rows 12” apart with plants 8” apart with beans in between the rows of corn.
This is in a space thats 4 x 15 feet so not much space and I kind of need to do it this way for my soaker hose setup. I’m hoping to get something out of it-as long as I feed it it should produce something....
All my stuff is on the perimeter of the yard and I’m trying to make more room. Normally it’s all I can do to grow a few squash and maters. I’d love to grow enough to can gobs of stuff for winter but just don’t have the room.
Trying to get better at it for when I do have the room.
When I get the room, I’ll probably have to do battle with deer and bunnies in addition to slugs and squirrels.
That one poster that has the tiny sideyard-daniel12 I think?
That one does miracles with small spaces!