Hi Austin, it was a pleasure helping you. We had a great team of people helping with this surgery.
After driving it some, if it still shakes a bit, one additional thing I thought of to check is the tightness of the seal for each of the 6 injectors. It may be wise to pull each one and check the cleanliness of the metal tube that they sit in. Clean each one with carb cleaner and remove any corrosion. Just be careful not to drop anything in there.
The injectors are clean, and have new seals and clips, but I don't think we cleaned those tubes well enough like we cleaned the intake ports. That is also a source of vacuum leak.
Then, when reinserting the injectors, each one should have that "satisfying" positive, tight snap that Mike mentioned. Also check that each clip is tight. Remember we needed to tighten one of them.
It was nice to spend time with you and your friends to make your Delorean even better.