Congratulation nice purchase its really worth paying only few thousand more
Regarding running period
First 1000km are called running period or break in period
in this time you should keep soft hand on bike
*Drive slow 40-50km/h
*Avoid quick acceleration
*Avoid heavy load
*Change first oil at 200km 2nd at 500km 3rd at 1000km
later on every 1000km considered best timing to change oil
however i think one can extend interval to 1500km easily
you can use atlas honda oil or try zic 20w40 its good engine oil
always try to purchase engine oil from big reknown dealer in your city
don't trust on road side small shops there is risk they may be selling fake engine oils
and in the end kindly do keep us updated on performance of your CG Dream in this thread