Yes most of the 660cc autos cars have slow initial pick up and gives a feel of under power when loaded with 4 adults on board.
Anyway, I don't have much experience with 2014 model as I own 2010 model. High octaine is good but not recommended for smaller engines or having low compression ratio. If you still want to use it then use it with 50/50 or 60/40 raito. For engine oil, it's best to follow follow user manual. Don't do any experiment as these engines are sensitive and incorect grade oil can make its valve lose and then you will be facing knocking.
For panel language issue, you have to google the language and learn some basic settings because it might not having English language. You should contact some good mechanic to resolve this panel language issue.