Illustrator CC working area size?


New Member
Hi, I'm hoping someone will be able to help with this.
A sign company that I do some work for are looking to upgrade their dated PC's with Macs and convert from CorelDraw X3 to Illustrator.
One thing we have an issue with on Illustrator is the size restriction of the working area. When creating artwork for shop fascias and vehicle graphics it's handy to be able to work at full scale, it makes the process of pricing materials much easier, this is what we currently do in CorelDraw.

Can anyone tell me what the full size of the working area is on Illustrator CC? Not the artboard itself, but the whole working area.
On the older versions of Illustrator I think the size is around 5.5m square.