Thank you all for your responses! The visa bulletin was current when we filed (I don’t remember the exact date of filing, but I remember it was current), therefore the concurrent filing. My husband was still on a visa when we filed, so he never fell out of status. He has his AP document (and has traveled with no problems) and EAD.
We have been seeing a lot of fast approvals lately (within a year of filing) which is why we thought it might be worthwhile to have our congresswoman check in, but there is nothing that we can think of that could jeopardize his approval. It has just been a long time and my husband is starting to get depressed and worried because his “career job” requires a green card.
I will look into possibly expediting my N-400, thank you!