Sooma,
You are talking about using that space in the pic? Not a container, right?
Go buy some composted manure, about 5-6 bags of it, at a big box store and mix in real good.
While you are there, also buy 5-6 bags of mulch.
I can see a trellis with jasmine on the largest emptiest part of the wall.
I would plant jasmine there.
Research Confederate jamine "Madison" and see what you think. Very strong scent, I have it.
I would buy a plumeria for the part that leans out, in front of the window. Look on plumeria forum to see how easy they are to grow and take care of. There are some highly fragrant ones you would love!
Plumerias also LOVE sun! You are the perfect zone.
You want something lower growing also, for the rest of the area.
I am not in your zone 10, but I am sure you will get plenty of other suggestions.

Hi Butterfly4u, thanks so much for responding! Yes I need to figure out what to do with that whole area...I know it's a mess at the moment :(

I love plumerias, in fact I even have a small 'Lemon Yellow' in a container. I was unsure if it would work in the area so thanks for the advice. Will research the Jasmine you suggested! Will probably need a trellis behind it to support as it grows right? I have a 'poets jasmine' in another container too. Think I can interchange those 2 or not the same growth habit?

I would love more suggestions for the small plants for this area from others! :)

Sooma