Best Place to ED (low act, solid everything else)

Yes, but:

  1. You typically will not have the ability to *compare* the ED school FA offer with the FA offer from other schools (unless one is coincidentally delivered at the same time, usually by an EA or rolling school).
  2. If you do have to turn down an ED admission for FA reasons, that is effectively "wasting" your ED application and any admissions benefit you got from it.