Delta likes Part 141 training. If you did some, make that known.
JKSees,
If you have a really strong app (high GPAs, academy or 141 aviation school grad, meaningful awards, Safety experience, IP time, etc.), I'd have the recommender email pilot selection once you have 100 hours 121. If your app isn't stellar, 6 months of 121 is probably better timing. JMHO.