Why don't you do the 44th East Essex instead of the 29th. 44th participated in a lot more battles if my judgement serves me well.
44th seem to be in every skin pack in existence, nice to have something else for a change.
Just saying, 27th served with Wellington throughout the entire Peninsula Campaign, and stood firm in the center of the line at Waterloo, taking severe casualties, if you're looking for other units to add