Mate this oil will be fine, infact i run this oil in my lifan 150cc. I usually change it after every ride, oils cheap and it only takes approx 700ml to fill so 4L lasts me a while.
How much you ask? Fill it till its at the full mark on either the dip stick or the sight glass, whatever it has. Of course this measurement should be taken with the bike upright and not on the side stand. I usually overfill it just a lil bit, maybe an extra 50-100ml. Just make sure you dont severly overfill it otherwise you can break things