NOTE: Because this is brand-new I'm not very familiar with how it works. I'm unfamiliar both in the sense that I don't know how the program looks (i.e., what to click and where it is) and also in the sense that I'm not familiar with any problems it has.
On that note - you need to make the normal deadlines for handing in work, even if you're using this new Visual Studio on a Mac, and even if it (or you) have problems with it. In other words, make sure that you start your work early AND that you have a backup plan in case you encounter any problems.