If I had to watch that from beginning to end I would fall asleep.
At least it's going to show something and that's always better than nothing in my book.
So long as it has a Progress Bar (or other progress indicator) then it's fine by me.
I don't like those oversimplified installs that just tell you when it's ready -- especially if you have one of those machines where you can't see Disk activity either. Otherwise whatever Ms come up with as far as automated install is OK - but it must have re-startable features if for example the install fails half way through (for example you run out of HDD space or Partition too small).
I don't mind just letting it run - I can go away and have a beer etc --but also I want it to work even IF NOT CONNECTED TO THE NET.