I think it would be easier if you had some specific questions troyhouse rather than a general invitation to provide feedback on your plan. We can only advise on avios related things here rather than delta miles questions. Have you done some research in to how available some of these routes are for reward availability? Some are not served by any oneworld carriers either. Also for some of those destinations you may be better off buying a revenue ticket such as an exEU J sale to HNL.