If there is a footer under it (36in thick) go for it. Did down and see what you got. Probably its just a slab poured on the ground. Did around the outside of the slab and dig a new footer and make it all nice and pretty start with some treated plates and go from there.
There will even be enough room to make a brick ledge
Judging by the 3 little piggys....
I drove through there not to long ago. I was pretty shocked to see what a lot of wind could do in person. It was pretty wild. Good luck with the build buddy.