Thanks for the replies! Yes, we are considering other factors in the early retirement program (Bonus plan, FSA, vacation, etc). I appreciate the search term tip, David!
And I answered too casually about penalty-free distributions - I was thinking about the IRS rule of 55, which I think is in the tax code you mentioned, C.B. I thought we did have to have the provision for that in the plan, but sounds like I might be mistaken.