Starter questions - Creator pro

I have been looking at the Creator pro mainly due to the price, enclosure and the 2 extrusions. Would I be needing any special files to print using this printer, due to having 2 extrusions or the same files that works for let's say Ender 3 will work for this as well?

Is it possible to extend the bed size for this printer at all? Seems a little too small consider the overall dimension (width) of the printer itself but not a big deal.

Thank you