Mom and daughter looking to restore 74 Dart or Duster
Wow, tough call! Do I welcome you to FABO first or say Happy Mother's Day? Both are #1 priorities but I'll say HMD since that is such an important part of your life.
As others have said, and although I prefer a Dart, the Duster will be your best bet here. What I haven't seen is the suggestion to look up a local Mopar club. The club members should be your best bet for both best pricing and sources for parts as well as local shops to do any work you're going to farm out.
Good luck and have fun because that's what this hobby is all about.