Garden edge planting scheme

In my kitchen garden I want the outside edges of the garden to be hedged with edibles (inside a perimeter fence).  I plan on having on the East side, blackberry bushes.  On the West side, asparagus.  Inside these I plan to put daylilies and various perennial onions.  Probably also some perennial herbs.

Is there anything obviously wrong with this plan?  I know it's not very complex, but, I'm not sure what else to put on the edges.  They need to be fairly tough plants.  Each side gets some shade.

In my food forest garden I have hedges on 3 sides and asparagus on the fourth east side..the North is a hedge of wild plum west and dwarf hazelnut east with 2 mulberry trees, the West side is a hedge of 3 kinds of raspberry (gold, red and black) and blackberries with 2 chestnut seedlings and a bearberry and hawthorn seedling evenly spaced..the South hedge is 9 blueberry bushes with 2 service berry trees..there is an opening on the SE entrance to the garden, the asparagus bed also has a paw paw baby seedling and a mountain ash baby seedling and a super dwarf cherry tree.

inside the garden is another cherry, 3 apples, 3 dwarf pears, and 2 goumi, as well as some rhubarb, herbs, and horseradish..there are annuals planted in beds under the trees and throughout the garden, there are arbors with grapevines..

you can view some of the garden on my facebook
photo albums

Brenda Kay  Groth on facebook

or see some photos on the blog below

Thank you!  I know I should try to get more diversity in there, but the edges have to be drought tolerant. 

What about sunchokes?

Thanks!  I have them on part of the edge but previously they didn't seem to really like it here because of the heat and drought. I'm hoping they'll do better in the new hugel bed I gave them.