Thanks to all the relplies,
@ Stephen Layne
The soil structure is Loam, a good luck

20% Clay, 40% Silt, 40% Sand, it just lacking in organic matter.
PH level seem balanced according to a home test using vinegar and bicarbonate, i will further investigate.
Yeah expanding the garden or the design over the concreted area is possible.
When you mentiond the fig tree I remembered a plant list I read in Art Ludwig's book Oasis Greywater where he writes "No paradise is complete without figs"

. I checked that list of plants and it lists plants from warm to cold climates as so:
BananaMangoAvocadoCitrusPineapple GuavaFigClumping BambooBlackberry, elderberry, currantsPeach, Plum, Apple, Pear, Quince
From Avocado and below all can grow in this climate, I might try a Mango and a Banana with a bit of micro climate modification.
This book reminded me with it's systems that it's quite possible to deal with lots of water by using the right earthworks and plants choice.
@ Tomas More
I like the idea of the hanging gardens of Babylon. I made my desktop background this imagined garden so to keep the inspiration going..
The garden have a sitting area/ a deck with a pond under it hopefully. Also a stream and waterfall.
The budget is fairly good.
What do you mean by a Rain-machine, I remember something like a tractor or so but can't get google to show me what you mean, can you send me a link please?
@ duane hennon
The videos are quite helpful.. i'm watchin watchin...
I would really like to know if ponds and aquaponics need lots of water or do they resemble a closed loop that holds lots of water.
Thank you all, it's really helping to get these several tips..