Adjust grace note stem length and indentation?

[Michael Lakes]

Hi,

I got wo questions :-)

Can I adjust the stem length of the grace notes such as the one below to 
make it shorter?  And how can I indent the last line of notes?

I need to make a D.C. al Coda ... I thought raggedlast was use for 
indentation, but it doesn't.

thanks for any help.

======================
\version "2.2.2"

\score { \notes  {
        \key d \major \time 6/8
        <<{
        \override Slur #'attachment-offset = #'((0 . -.5) 0 . -.5)
        \once \override Stem #'stroke-style = #"grace"
        \grace a''8( a''4.) b''8 cis'''8 d'''8}\\
        {fis'4. s4.}\\
        {}\\
        {d''8\rest cis''8 e''8 <d'' g'' e'>4.}>>

        }

\paper {
        raggedlast = ##t
        }

}

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