I usually fill and crumbcoat on Thursday and ice and decorate on Friday.

Due to the design of this cake and the amount of decorating involved I would like to fill and crumbcoat on Wednesday, ice on Thursday and decorate on Friday. Would this be okay, or do you think the extra day will make the cake dry?

If it's a fondant covered cake, that wouldn't concern me at all. Buttercream I'm not so sure about!

It should be fine. I have done this when I have to do several cakes and have had no problem cake is still moist.

It will be fine Cakes stay fresh for 7 days & then covered with icing it will stay fresh longer because sugar is a preservative~ I usually do everything on a Thurs then decorate on a Fri. Wed doesn't make a big difference~

I have done this a few times and it's been fine. I'm a box-mix baker, if that makes a diff.

Thanks everyone. I'll give it a shot. They are buttercream (sugarshacks recipe). I also use the WASC recipe for cake.

You will be fine!!

I had a ridiculously busy week this week and the intern or free assistant that I have couldn't work this week!! So I had to start baking on Monday for Saturday! Just be sure to get it crumb coated as quick as possible. I got a call from a saturday wedding that was baked on tuesday and they said it was the best cake ever.

No problem. Not only does it keep fresh because it is sealed with the butter cream you can also freeze it in that format as well if necessary. Let it thaw in the fridge so you avoid condensation and voila!
I always make my cakes in stages. I also crumb coat them when they are frozen or very well chilled to make the process easier.
Good luck