I would use moore vents. Maybe Roof ventilation is over exaggerated now days and it wasn't really an issue 50+ years ago and roofs didnt collapse. But if you have the roof joists open why would you not want to spend an extra $40 and 30 mins installing moore moore vents to get a cooler attic and probably a longer roof life. On a project like this. Moore vents would be my last concern during planning. If you have a more specific question let us know. What type of roof do you have now? What is your plans?