I am thinking once I am ready to make my next Sim I am going to see how many days I can keep him or her from going home for any reason other than to pay the weekly bills.  While there does not appear to be an ability to grow food in the game, you can catch fish and sell them at the store. 

Based on how long it has been taking to get promotions I am not sure if the Jack Of All Trades LifeTime Want is possible, but it might just have to do with the way I am playing, although I think most promotions could be every other day.