With 85+5 points for the 190 visa in Victoria as an Offshore Mechanical Engineer & Engineering Technologist, lodging a Request for Invitation (ROI) for 190 is a strong option due to your high points. The 491 visa is regional provisional and may be considered if you want a regional pathway, but 190 offers permanent residency directly with state nomination. Given your points, 190 would generally be the preferred route.