Sorry For some reason I thought you did your first row of blocks
Now a bit easier
I would work the blocks so they fit nicely on the outside for the stones to go on
Inside you the. Got liner to deal with as long you can patch more mortar to transition the sharp point of the foundation to the blocks or even with more padding like carpets
Just bend or cut the rebar, you can even drill into the footing for stick new rebars around
It is the stones on the outside and the weights I’m concern if you decide to keep it the original way