Not having Showtime shouldn't be a problem. I think that as long as you have at least Ambitions and either Supernatural or Generations, you have enough different skills that produce items for the mausoleum. Those two expansions along with the base game should give you gardening, painting, fishing, sculpting, inventions, books, and either elixirs (SN) or potions (Gen). In my opinion, for this Dynasty the only real advantage of having Showtime is the Genie life state.