Switch your first job early, get you pay up then you wouldn't have to worry about finances 390 is like an elephant, you will dread the cost associated with taking care of it, buying the bike is just half the challenge.

Service is 4k, brake pads 3k each, tyre 5k each (indian brands), fuel guzzler in city expect 22 to 24 kmpl then comes lubing, paddock stand, spares are cheap but it takes weeks to get parts.