Lawn Renovation: Should I level before coring, topdressing and seeding?

Have recently killed off the grass with glypho . Mowed low and scarified. I have Some significant low spots, holes and significant slope (as you can see the bottom of boxing on left) i was thinking of doing a rough level with screened soil before rolling, coring and aerating. I would then top dress with sand/soil mix and seed/rake/roll. Am i wasting my time with leveling before coring?