Perhaps I'm a gluten for punishment, but I'd do this simply with additional fills/strokes in the Appearance Panel... and the some transform Effects. This would tie the number to the circle.. and then I'd position them manually.
- Select the text with the Selection Tool (Black Arrow)
- Add a new Fill in the Appearance Panel
- Highlight that new fill and...
Effect > Convert to Shape > Ellipse from the menu and adjust (size)
- Then choose
Effect > Distort & Transform > Transform from the menu and adjust the Move fields to position the circle where you want in relation to the number.
-- Repeat all the above for the stroke (or merely copy the effects from the fill tot he stroke)
Then all you need do is change the type (number). If the circle is positioned poorly, you can always readjust the fill and stroke to better accommodate the text.
Drag one of the text objects to the Graphic Styles panel and in the future, if you want the same configuration, you merely need to select a text object and click the Graphic Style in that panel.