In such a small space, true guilds are going to be hard to do. I'd eliminate any soil-building plants that don't produce food and instead add lots of good
compost to build soil health. I'd put in some insectary plants, as we need pollinators in the
city. But I'd stick mostly with high-yieldingtubers, veggies and greens. I've done a fun, small space guild with mashua and peas or beans up a
trellis, kale, and some salad greens. But you'll get a lot of yield from more traditional relay and high-density plantings of vegetables and
perennial greens.