I don't think 24a is possible.  There's probably a faster way to sequence this, but this is probably one of the minimum area layouts.  You mostly just need access to too many hexes.  The absolute minimum is 23a (due to needing to rotate the flake).  I'm forced to use two arms here to access all of the outputs.  I would put unbonders there as I only technically need access to one of the two, but I couldn't figure out the geometry.

I really hope someone pulls that off.