plans for a garden

I would like to have a garden this spring/summer.
there are two box gardens already set up in our backyard.

I only hope my landlord will let us have the one by the red shed
{if she lets us have one at all}

this is what I'd like our garden to look like:

I want to plant all of these above,
oh, and also some darling sweet pea flowers.
is that too much for one box garden?
I think it might be.