I realized that multiple trellises probably won't work so well, even if the pea trellises are shorter than the bean ones, so I revised a bit. The double line across the back row will be one long trellis.

Succession-wise, I'm thinking that once the lettuce and black valentine bush beans are done on the left I'll just give the tomatoes room to spread. On the top where the peas start, I'll replace some with beans, and some with a pea that will grow in late summer/fall. Thoughts?

I'm not a SFGardener, but might become one now that I live in town. Most everything looks to be summer hot weather stuff except for the lettuces. those are (usually) cool weather crops. Also, unless your zucchini are a small version, I've never had 2 in less than a 4x8' bed! They usually grew over the bed into the paths and we consistantly put boxes of squash out on the road to give away! JMHO

after looking at your plans, my advice is to go back to drawing board you are trying to do to much and grow to much in small space.

it looks good to me. tall plants at the back, shorter plants at the front. I found this blog helpful, when it came to what soils to place where - for your leafier plants you want to put nutrient rich soil. For your root plants sandier soil. hope that helps!