My gut would be happier if the footing went back (right) further, but my gut isn't going to beat a licensed civil engineer, if one designed it.
Retaining walls are trying to overturn (fall down to the left in this picture.) If there's no particular need for it to be vertical, a few degrees of slope into the hill (bottom a bit left, top a bit right) helps to make it more difficult to overturn, too.
I question moving the vertical rebar to the outer side of the core at the second block - rebar holds tension, and the tension is going to be towards the backfill as it tries to push the wall over.
If all the soil to the right is backfill, I'd prefer to see drain lines extending into it. I'd also like to see one at the lower front (left) edge of the footing.
You'll have a fun time compacting that much fill enough that the slab on top isn't sitting over a void after a while, unless you can wait through a winter to help settle it before pouring the slab.