A long-term investment solution depends on the characteristics of the investor and the nature of the problem being solved. We design investment solutions by accounting for investment horizon, sources of income, spending, and the impact of non-traded assets. Accounting for non-traded assets means that we can include as assets natural resource exposures and/or wage income. Accounting for investment horizon means that we can assess the level of factor exposure that is appropriate for specific investor classes. Our solutions are expressed in terms of factor exposures, rebalancing rules and efficient implementation vehicles.