How should I organize making a cake days ahead?
I wouldn't make the layers fully in the freezer.  It will be hard to seal up and may dry out.  Also, frozen layers are easier to work with.  The freezer will dry out unsealed cake extremely fast.

I'd bake all the cake, trim and level them, wrap tightly and freeze on Thursday.  Make the sauces and creams on Friday and put them in the fridge.  Assemble all on Saturday.