Great Job LeineLodge!
Just to add a little bit more. Your retirement is broken into two sections on the 401k website: Delta Pilots DC Plan & Delta Pilots Plan. Each of the these can be funded by a few different sources.
Delta Pilots DC Plan can be funded by: Company Contributions or PMNW MPP Contributions.
Delta Pilot Plan can be funded by: 401K Pre-Tax (your elections), Company Contributions, PMNW Employer or PMNW Pilot Employer.
Clear as mud, I believe there are so many options for funding because of the merger of the plans for each group. Give ALPA a call for the details. Hope this helps.