Sorry about the title.  I'm about to attack the biggest cake I've done.  I'm going out of town and have to finish it Thursday or Friday morning for a Saturday morning party.

Today is Wednesday.  I am baking and cooking my cakes.  I then plan to freeze them for a bit so they are easier to layer.  I will then frost with a coconut buttercream (Crisco and sugar and extract) freeze until crust and then wrap in saran wrap.  

On Thursday or Friday morning I am going to drizzle with chocolate Grenache and from that point on the cake needs to remain at room temp.  I will deliver to the home and then Saturday the cake will be delivered to the party.

Will this work?  If I freeze everything will that reduce the amount of time it can be left at room temp?