I believe adding tags counts as an edit? This may limit the usefulness of a bulk tool for this for TL3s.
(max edits per day) x (tl3 additional edits per day multiplier) is default (30) x (2), so 60 may not get you very far? (especially when you want some edits for your own posts). TL4 would have an extra 30 (tl4 additional edits per day multiplier is 3), which I think is more realistic.
Of course, an admin could up those numbers if they wanted.