Lina Renaud

Thank you all for this thoughtful advice!
(I'm still waiting for quotes for the concrete removal. Meanwhile, the storm here last week taught me that if I use pots and planters on top of this concrete area, i'll need to put up some sturdy windbreaks. )

Thank you all for the great advice. I really appreciate your time and thoughtfulness.
I'm going to get some quotes for the cost of concrete removal, and then I think hopefully start by at least removing strips along the borders to plant green hedges, and then depending on costs, maybe some 1x1 meter holes for sun-loving fruit trees/vines to create some shaded areas to put some of the planters. I'm in the central part of Portugal, about 15km from the Atlantic ocean, so summer heat is still a concern.
The concrete is well built, drains away from the house, and the drainage channel feeds into my irrigation pond, so i'll try to keep that intact!

What would you do if you were me? ...

I just moved into a home in a Mediterranean climate (Portugal). I would like to grow sun-loving fruit trees and vines, as well as grow a hedge along the road-side wall of my property. But, the previous owners put poured concrete all over the flattest and sunniest (south-west facing) part of the land (and did a high quality job of it too!). It's approx. 400m2 (4,300 sq ft) of pavement. I also know that the quality of the soil beneath the concrete isn't very good.

If cost ($) were not a consideration, would you:
A.  work with what's here and put in a bunch of container plants/garden?
B. Remove sections of the concrete? (e.g., make a few holes for trees and the area along the wall to grow a hedge)?
C. Remove all the concrete?
D. Some other idea?

Thanks in advance for your advice and thoughts!