You asked at "a reasonably young age"
I would think you could tell the barred males from non barred females within a few weeks so I think it would work out.
If not double up the barring so pullets have one copy and the males two and see if that works any better.
We're all working on auto sexing barred lavender browns over there. Bit different then straight lavender sex links but I know she has tons of great pics of lavender browns with single barring and chicks with head spots.
I'm also working on solid lavender with and without barring but I'm still on...