okay i have a very big cake due this weekend, (biggest i've ever done) I want to do a lot of stuff a head of time but i don't want to freeze my cakes, they tasted wierd last time i froze this recipe. This is my plan and I want to know if it will work

Wednesday - Bake cakes and wrap them in saran wrap and leave them out on the counter

Thursday - Stack cakes and fill them with buttercream icing and let them settle ( while covered in saran wrap)

Friday - decorate cakes and finish up

Saturday 11a.m. serve cakes at party?

That will be fine if you are not in a really humid area.
Can you refrigerate them? When they are well wrapped they will not dry out in that short of time but will stay fresh.

no its not humid i'm in texas so it is really hot and dry lately.

Sounds ok, but I would bake and fill Thursday since the filling is just buttercream and not something else to mix. Maybe mix up all the buttercream on Wed.