I prefer 0w20, i would suggest you the same.
The OEM size is 175/65/15, 205 is too big, you are not enjoying the true pleasure of this car by compromising suspension.
Push Start is Paid Extra in Japan, G version does not mean it will come with Push start
Auto Light is for ON OFF in most of the models no need to see any electrician. (does your car have projection lamps, or Halogen lamps)
I think this option comes in Safety Assist variant only.