Trying to cobble this build together with feats is a waste of good feat slots. I would definitely go the multiclass fighter or paladin route. Fighter (EK) if you only want 1 to 3 martial levels, but paladin (Ancients) if you want more.
Do you have specific peeves about multiclassing? Or is it something your DM won't allow?
Do you have specific peeves about multiclassing? Or is it something your DM won't allow?