My personal view on this:
Just did my first oil change and put all 5 quarts in it. Next oil change will be with a 5l jug and planned to put everything in it. Never heard of any problem with a little bit of overfilling, but heard about problems with not enough oil.

As for the oil quality, it depends on what you are doing with your car. I have been told by the dealer service department that they put Esso conventional oil in it as the factory fill.

So you can still put conventional oil if you want or move to synthetic.
For my part, since I planned to change my oil every 6 months (normal service use), it depends how many kms I planned to do in this interval: not that much= conventional oil, quite a lot= synthetic blend, a lot= full synthetic.
For now, it is synthetic blend in it for the next 6 months as I will probably do about 10.000kms of mainly highways with my car. I planned to do an oil analysis after 4 months or 8.000kms to see how is the oil.

That is my 2 canadian cents.