Doing the best with what you have available is something to strive for actually. So much can be done when you have a creative mind like you obviously do. I personally like the smaller beds. Baring another invasion of grasshoppers this year, I hope to grow at least 75% of our food. I have plans to incorporate a blue berry patch this spring. Sounds like an amazing place to live and I'm looking forward to seeing more from you. :)
Hope you can reach your goal. I think there's nothing more satisfying then a meal that was (almost all) alive less then 30mins before.
Would love blueberries here too, maybe a few this spring if we can find them. We have a couple of nice current, strawberries and allium polyculture nulcei that produce well and we can expand from.
Be seeing you!